Wednesday, February 05, 2025

 

How does light affect citrus fruit coloration and the timing of peel and flesh ripening?



Wiley




Citrus fruit rind color has long been used as an indicator of ripeness, but for some fruits such as mandarin fruit in the Chongqing region of China, the peel and flesh do not ripen synchronously, with the flesh usually reaching maturity while the peel is still green. This is a characteristic that seriously affects its commercial value. In new research published in the Journal of the Science of Food and Agriculture, investigators have discovered how red and blue LED light can stimulate color change in mandarin fruit.

Experiments showed that this light exposure causes fruit color change by promoting chlorophyll degradation and carotenoid synthesis. A protein called CcUNE10, which is part of the bHLH transcription factor family, played an important role by binding to and activating certain genes involved in chlorophyll degradation.

“The above results provide a theoretical basis for the further study of the postharvest coloration of mandarin fruit and enhance research on the bHLH transcription factor family's function,” the authors wrote.

URL upon publication: https://onlinelibrary.wiley.com/doi/10.1002/jsfa.14119

 

 

Additional Information
NOTE:
 The information contained in this release is protected by copyright. Please include journal attribution in all coverage. For more information or to obtain a PDF of any study, please contact: Sara Henning-Stout, newsroom@wiley.com.

About the Journal
The Journal of the Science of Food and Agriculture publishes peer-reviewed original research, reviews, mini-reviews, perspectives and spotlights in these areas, with particular emphasis on interdisciplinary studies at the agriculture/ food interface.

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THEY CAN'T

How parents can protect children from mature and adult content


Experts highlight key strategies to protect kids from R-rated movies and violent video games



University of Toronto




Toronto, ON – As children's screen time continues to rise, so does their exposure to age-inappropriate content, including R-rated movies and violent video games. A new study published in BMC Pediatrics underscores the critical role parents play in shaping their children’s media consumption.

As child media consumption increases along with their exposure to mature media content, a new study finds that parent media practices play a key role in shaping preteens’ consumption of mature video games and R-rated movies.

Researchers found that parents’ own screen habits—such as using screens in front of their children and allowing screens during meals or bedtime—significantly increased the likelihood of preteens engaging with mature media.

“Bedroom screen use emerged as the strongest predictor of mature media consumption,” says lead author Jason M. Nagata, MD, Associate Professor of Pediatrics at the University of California, San Francisco. “When children have unrestricted access to screens, particularly in the privacy of their bedrooms, it opens the door to unchecked exposure to age-inappropriate content.”

On the other hand, proactive parental monitoring and clear media rules were linked to lower consumption of mature content. Interestingly, the study found that using screen time as a reward was associated with less mature media exposure, while taking screens away as a punishment was linked to more exposure—suggesting that how parents regulate screen time matters.

“Our findings reinforce the importance of setting clear, consistent rules around media use,” says Nagata. “The American Academy of Pediatrics recommends that families create a family media plan to set limits and encourage screen-free time, especially at meals and bedtime.”

The study analyzed data from 10,054 children ages 12-13 in the nationwide Adolescent Brain Cognitive Development (ABCD) Study, the largest long-term study of brain development in the U.S. A related ABCD study recently revealed that nearly two-thirds of preteens (ages 11-12) have underage social media accounts, despite most platforms requiring users to be at least 13.

“Given that R-rated movie and mature video game consumption by teens has been linked to poor academic performance, mental health struggles, substance use, and behavioral issues, this study reveals the critical role that parents play in influencing children’s screen use patterns,” says co-author Kyle T. Ganson, PhD, assistant professor at the University of Toronto’s Factor-Inwentash Faculty of Social Work. “We hope our findings will empower parents by providing actionable steps they can take to help their teens develop healthier screen use habits.”

“One key factor in a child’s exposure to mature content is how much screen time their parents use,” says Nagata. “Children often model their screen habits after their parents, so setting a positive example can make a big difference.”

 

Cutting emissions in buildings and transport: Key strategies for 2050




CMCC Foundation - Euro-Mediterranean Center on Climate Change





Key findings: a roadmap to transform energy use by 2050

  • Electrification (e.g., switching to electric vehicles, heat pumps) alone could cut direct emissions by 45-77% in buildings and 22-86% in transport by 2050.

  • Combining electrification, efficiency improvements, and behavioral changes could reduce emissions even further: 51-85% for buildings and 37-91% for transport by 2050.

  • multi-strategy approach would lower overall electricity demand by 8-33% per year, making the transition more cost-effective and reducing strain on power grids.

  • The findings align with global climate goals, showing that integrating these strategies can significantly contribute to limiting global warming to 1.5°C by 2050.

“These results demonstrate that the transition to clean energy in buildings and transport can be more manageable than previously thought,” explains Johannes Emmerling, Senior Scientist at CMCC. “By combining electrification with improved efficiency and smarter energy use, we can achieve dramatic emissions reductions while actually reducing strain on electricity systems—leading to lower costs and fewer infrastructure challenges as we tackle climate change.”

By focusing on how we heat our buildings and move around, the research provides a practical roadmap for addressing climate change. It shows that major emissions reductions are possible through three key strategies: electrification, which includes electric vehicles and heat pumps; improving energy efficiency through actions like better insulation and more efficient air conditioning systems; and altering how we use energy, such as by reducing dwelling sizes or adjusting thermostat settings.

Crucially, this work suggests that these key strategies can be implemented using existing technologies, like electric vehicles and energy-efficient building materials, without having to wait for future innovations.

Why this matters: a science and policy challenge

Unlike previous studies that examined individual measures in isolation, this research takes a comprehensive approach, using multiple Integrated Assessment Models to explore how different strategies interact, providing more robust and reliable results than previous single-model studies.

“Our study highlights the often-overlooked demand side of decarbonization,” says Alice Di Bella, PhD candidate and affiliated researcher at CMCC. “By comparing results from multiple models, we provide robust evidence that electrification, efficiency, and behavioral shifts are practical and effective solutions for climate mitigation.”

The study used seven global integrated assessment models, including the WITCH model developed at CMCC, to evaluate emissions reductions across different regions and policy scenarios. CMCC researchers played a key role in analyzing strategy interactions, emission scenarios, and cost evaluations, drawing on the center’s expertise in climate research and economic modeling.

Next steps: turning research into action

The study provides critical insights for policymakers, emphasizing that relying solely on electrification could create unnecessary burdens on electricity systems. Instead, a balanced mix of efficiency improvements, behavioral shifts, and electrification offers the most effective and economically viable path toward decarbonization.

“Our work highlights that the tools to cut emissions are already in our hands,” says Emmerling. “The main challenge lies not in technology but in policy and strategic implementation. By combining these strategies smartly, we can achieve significant reductions while making the transition more affordable, reducing strain on electricity grids, and ensuring a more sustainable future.”

Colombia's president orders national oil company to cancel US venture over environmental concerns

Story by Manuel Rueda
 • 3h • 

BOGOTA, Colombia (AP) — Colombian President Gustavo Petro on Tuesday ordered the state-run oil company Ecopetrol to cancel a joint venture with a U.S.-owned company that was expected to produce around 90,000 barrels of oil per day, citing environmental concerns.

In a nationally televised speech, Petro said he opposed the recent extension of a deal between Ecopetrol and Occidental Petroleum, or Oxy, because it involved extracting oil through fracking, a controversial technique used to extract oil and gas from shale rock that has been criticized by environmental groups.

“I want that operation to be sold, and for the money to be invested in clean energies,” Petro said in a meeting with his Cabinet that was livestreamed on social media. “We are against fracking, because fracking is the death of nature, and the death of humanity.”

Ecopetrol had announced on Monday it would renew its operations with Oxy in the Permian basin, an oil producing region that spans Texas and New Mexico, to develop 91 oil wells, investing over $880 million.

Ecopetrol said its projects in the Permian basin produced an average of 95,200 barrels of oil per day in the first nine months of last year. Operations in the Permian basin made up around 12% of Ecopetol’s total production last year.

Ecopetrol, controlled by the Colombian government but also listed on the New York Stock Exchange, saw its shares rise 2% on Tuesday following the announcement of its deal with Occidental. However, they fell slightly after Petro called for the agreement's cancellation.

Colombia has refused to approve fracking projects on its territory, though it had not previously blocked Ecopetrol from taking part in fracking ventures overseas.

Environmentalists argue that fracking can pollute water sources and cause tremors.

____

Follow AP’s coverage of Latin America and the Caribbean at https://apnews.com/hub/latin-america

Manuel Rueda, The Associated Press
UNION BUSTING

Amazon to Face Legal Action After Laying Off 1,900 in Quebec

WALMART QUE DID THIS TOO WHEN UNIONIZED

A Prime delivery truck drives past Amazon's DXT6 warehouse in the Montreal suburb of Lachine on Monday, Jan.27, 2025. (Christinne Muschi/The Canadian Press)

By Mathieu Dion and Matt Day, 
Bloomberg News
February 04, 2025 

(Bloomberg) -- Amazon.com Inc.’s decision to close all seven of its warehouses in the Canadian province of Quebec and terminate more than 1,900 workers is prompting legal action from the affected union.

The Federation of National Trade Unions will petition a court to annul the layoffs and order the reopening of the warehouses. It will also ask for payment of compensation and damages, the union said in a statement Tuesday.

Amazon is in the process of laying off employees in the province and will cut ties with more than 2,600 others who work with delivery partners, according to Quebec’s employment ministry. The online retailer plans to use subcontractors, such as Montreal-based Intelcom Courrier Canada Inc., instead.

“What it calls its ‘new business model’ is just an attempt to circumvent its obligations under the Labour Code,” Federation President Caroline Senneville said in the statement. “The court should recognize that this scheme violates the law and it can then order the reinstatement of Amazon’s workers.”

The union had been negotiating with Amazon since July to create a collective agreement for 300 employees at a warehouse in Laval, a suburb of Montreal. The closures were announced on Jan. 22, less than a year after the Laval workers unionized. Amazon said at the time that the decision was not related to the unionization effort.

Amazon spokesperson Barbara Agrait said returning to a third-party delivery model will allow the company to provide “even more savings to our customers over the long run.” It’s complying with federal and provincial laws, she said.

The union also launched a campaign calling on consumers to boycott the multinational by not shopping on its online platform and canceling Amazon Prime subscriptions.

Francois-Philippe Champagne, Canada’s industry minister, said in January that Amazon’s decision is unacceptable, and called for a review of the business relationship between the company and the Canadian government.

Amazon has 1.55 million employees worldwide. Many of their warehouse workers in Europe are covered by sectoral bargaining agreements. Employees at facilities in New York and Philadelphia have unionized, but still lack a contract.

(Update with comments from Amazon in sixth paragraph.)

©2025 Bloomberg L.P.


WAIT WHAT?!

Parks Canada sends memo encouraging employees to buy from Amazon amid decision to leave Quebec, , tariff war with U.S.
February 04, 2025 



A memo from Parks Canada encouraging employees to join Amazon’s business program to purchase office and other supplies is causing waves, according to an exclusive report by Noovo Info.

The e-mail was sent on Monday afternoon, just as the Canadian government was working to convince U.S. President Donald Trump to suspend his tariff threat.READ MORE: Canada and the U.S. have avoided a trade war for now. Here are the latest updates

It also comes less than two weeks after Amazon announced that it would be closing all its facilities in Quebec and returning to a third-party delivery model.

“We are pleased to announce that Parks Canada has established a business account with Amazon for the purchase of low-value goods,” reads the notice, a copy of which was obtained by Noovo Info. “This new program simplifies your purchasing process and allows you to take advantage of the vast selection of products and competitive prices that Amazon offers.”

Managers will be allowed to make purchases up to $10,000 with a Parks Canada purchasing card without having to issue a call for tenders.

The limit is $5,000 for other employees.

“My colleagues simply couldn’t believe it,” one employee told Noovo Info.

Amazon is pulling out of Quebec over the next two months, spokesperson say it's returning to a third party model.

A Parks Canada manager, who is not authorized to speak to the media and asked to remain anonymous for fear of reprisals from her employer, acknowledges that the note was sent at a bad time.

“It’s bad timing,” she admitted, pointing out that the directive had been in the works for some time.

Nevertheless, she says she is urging employees to buy from local suppliers wherever possible.

“It’s not an incentive to buy with Amazon,” she said. “It’s to give us information about what the employees bought.”READ MORE: Quebec union confederation calling for Amazon boycott, planning legal action

Tuesday, the Confédération des syndicats nationaux (CSN) launched a boycott campaign against the e-commerce giant, calling on the public and politicians to demonstrate on Feb. 15.

“There are 450 agencies in the federal government, and maybe the memo hasn’t made it everywhere,” said CSN President Caroline Senneville, adding she knows a few federal ministers “who won’t be happy about this.”READ MORE: Amazon closing all Quebec warehouses

Following Amazon’s Jan. 22 decision to close all its facilities in Quebec, municipalities across the province have said they would stop doing business with the retail giant.


The Canadian government also spoke out at the time, demanding that Amazon “immediately” reconsider its decision to close all its distribution centres in Quebec and threatening to review its commercial relationship with the company if nothing is done.

Amazon has denied that the closure is linked to the unionization of employees at the DXT4 facility in Laval, Que.

Rachel Lau

Digital Reporter, CTVNewsMontreal.ca


Why ESG Faces Backlash and Its Future Under Trump 2.0

By Saijel Kishan and Tasneem Hanfi Brögger, 
Bloomberg News
February 04, 2025 


(Bloomberg) -- ESG. Three letters that have inspired, confused and angered.

They stand for environmental, social and governance, and refer to a strategy where banks and investors weigh factors such as climate change and labor conditions in their financing decisions.


The term was coined about two decades ago by United Nations staffers working with the finance industry. It became more popular after the #MeToo, racial justice and climate movements took hold when President Donald Trump was in the White House the first time around. The hope was that ESG standards would help make the world a better place, demonstrating that profit doesn’t have to come at the expense of clean air, human rights or honest management.

The ESG label was put on everything from mom-and-pop investment funds to complex Wall Street securities. But it was an amorphous and ill-defined concept, and quickly became a hotly debated topic as inconsistencies were exposed.

As accusations grew that companies and money managers were exaggerating their ESG credentials, European and US regulators began to clamp down on this “greenwashing” activity. And then ESG investing became a political wedge issue in the US as Republican politicians mounted an unprecedented, coordinated attack, castigating it as a threat to American capitalism — all before Trump even began his second term.

How have Republicans attacked ESG?

The US is the epicenter of the ESG backlash as the investing strategy became a lightning rod in the country’s culture wars. Financed by fossil-fuel interests, Republicans took aim at Wall Street for its talk on climate change, accusing lenders and investors of being part of a “woke agenda.”

They launched investigations, introduced anti-ESG bills across the nation and restricted some firms from doing business in their states. Officials also took legal action against companies including BlackRock Inc. — the world’s largest money manager, whose chief executive officer, Larry Fink, was an early advocate of ESG — claiming they prioritized ESG considerations over investment returns.

Republican lawmakers in New Hampshire even tried, though unsuccessfully, to criminalize the use of ESG factors in investing.

How will Trump’s return affect the ESG landscape?

Conservatives stepped up their anti-ESG efforts in the run-up to Trump’s inauguration. In December, the Republican-led House of Representatives’ Judiciary Committee called on investment firms to detail their role in net-zero groups such as Climate Action 100+, which it accused of operating as a “climate cartel.”

The attacks on ESG will intensify as the new Trump administration targets three-letter labels that can be used as a catchall for subjects it doesn’t like — another notable one being DEI, which stands for diversity, equity and inclusion. Shortly after being sworn in for his second term, Trump took aim at key ESG topics, including electric vehicles and wind turbines, while lashing out at DEI programs.

The fight is being sustained at the state level too. Texas Attorney General Ken Paxton is leading an effort to demand Wall Street answer questions about its DEI and climate commitments, threatening legal action if firms don’t comply.

What have ESG champions said?

ESG advocates have described Republicans’ attacks as anti-free market. They say taking into account the risks of global warming and other ESG topics can protect investment returns and is in line with acting in the best interests of clients.

The wildfires in California demonstrate the financial risks from natural disasters, which are becoming more frequent and severe. They’ve caused billions of dollars in losses, raising liabilities for insurance companies.

Labor strikes in 2023 cost the automaking industry billions of dollars and saw the share prices of Ford Motor Co., General Motors Co. and Stellantis NV — the big three Detroit manufacturers — tumble. Members of the United Auto Workers union successfully picketed for higher wages and other improvements in their employment contracts.


Has the anti-ESG push had an impact?

The war on ESG has sent a chill across the US finance industry. The pendulum swung from Wall Street being accused of embellishing its ESG bona fides to “greenwash” its image, to potentially “greenhushing” its activities, meaning it’s not being as vocal about its sustainability efforts.

BlackRock’s Fink said he would stop mentioning ESG altogether after it had become politically “weaponized.” His firm lost business from some state entities amid the wave of anti-ESG sentiment.

Money managers and bankers now avoid talking publicly about net-zero emissions goals and have scrubbed the ESG label from websites and many funds. Banks have quit climate alliances in droves amid the threat of litigation from Republican politicians. They’ve found themselves walking a tightrope because they still want to cater to climate-conscious clients.


Meanwhile, investors pulled around $20 billion from US ESG funds in 2024, according to Morningstar Inc., compared with outflows of just over $13 billion a year earlier. By contrast, traditional funds pulled in $740 billion of net new money.

That movement of capital wasn’t just about the political backlash; investors were discouraged by lackluster returns as the ESG strategy was tested by high inflation, elevated interest rates and supply-chain disruptions. The iShares Global Clean Energy ETF, for example, slumped by about 27% in 2024, whereas the S&P 500 climbed 23%.

The global sustainable debt market has proven more resilient. Annual bond issuance topped $1 trillion in 2024 — the second-highest total since the market’s inception in 2007, according to data compiled by Bloomberg. This was fueled by record sales of green and sustainability notes.


Has the ESG backlash spread to Europe?

There are headwinds for ESG in Europe too, although these are being driven more by regulatory fatigue rather than the ideological debate raging in the US. Companies are balking at the sheer volume of data points they’re being asked to provide, on everything from the gender diversity of their boards to the biodiversity risks posed by their operations.

The European Union has been at the forefront of ESG rulemaking, buoyed by its commitment to reach net-zero emissions by mid-century — a target that’s enshrined in law. The bloc introduced its green taxonomy in 2020, a classification system that defines what economic activities are considered environmentally sustainable.

But two more landmark ESG reporting rules have been passed since then and concerns are growing that the regulatory burden could put European companies at a competitive disadvantage — particularly as the US looks poised to enter a phase of deregulation. The EU’s two biggest economies, France and Germany, have pushed for the bloc to scale back its Corporate Sustainability Reporting Directive and Corporate Sustainability Due Diligence Directive.

The EU’s executive branch, the European Commission, said it would propose a legislative package to simplify the three pillars of its ESG regulation — the taxonomy, CSRD and CSDD — and this is likely to land at the end of February 2025. The Commission is expected to limit the number of companies in scope for the full CSRD requirements.

©2025 Bloomberg L.P.
Interprovincial trade barriers: what they are, why they exist and how to cut them

By Dylan Robertson, 
The Canadian Press
February 04, 2025 

Prince Edward Island Premier Dennis King, second from right, reacts as Manitoba Premier Wab Kinew speaks at a press conference concluding a first ministers meeting in Ottawa on Wednesday, Jan. 15, 2025. The Trump administration's threat to impose damaging tariffs has boosted longstanding calls for Canada to tackle interprovincial trade barriers. THE CANADIAN PRESS/Sean Kilpatrick

OTTAWA — The Trump administration’s on-again, off-again threat to impose damaging tariffs has boosted an old idea for driving economic growth in Canada: eliminating interprovincial trade barriers.

“There are millions of different ways in which rules and regulations and standards and so on affect decisions that add up to a lot, at the end of the day,” said University of Calgary economics professor Trevor Tombe.

Here’s a look at how interprovincial trade barriers work and why years of efforts to tear them down them have largely failed.

What’s an interprovincial trade barrier?

Tombe said this term applies mostly to regulatory burdens that frustrate efforts to buy, sell or otherwise do business across provincial lines. They generally don’t involve quotas or tariffs.

“It should just be thought of as differences in the rules and regulations and standards and so on that exist from one province to the next,” he said. “Navigating those different rules adds costs, and therefore detracts from internal trade.”

Tombe said the provinces have a combined total of about 600 professional credentialing bodies that regulate goods and services within their borders — so these barriers exist in virtually every industry.

Health and safety rules that vary by jurisdiction can throw up barriers to interprovincial trade. They include provincial regulations that require a commercial vehicle to get a second inspection after crossing the border between British Columbia and Alberta.

They can also include federal regulations, such as those that require federal inspections of agricultural products when they cross a provincial border — even if the product was inspected provincially when it was produced.

Provincial regulations that categorize products for tax purposes — regulations that determine which ingredients a beverage must contain to be sold as “vodka,” for example — also make it harder to sell products across provincial borders.

But Tombe said the modest level of alcohol trade across provincial borders relates less to regulations and more to the fact that most provincial governments purchase their own supplies for provincial liquor agencies.

Experts have been lamenting the low level of interprovincial trade in Canada for decades. Tombe pointed out that the problem was flagged in the 1940 report of the Royal Commission on Dominion-Provincial Relations.

Why do these barriers exist?

Tombe said they’re largely the product of political inertia.

“There aren’t nefarious motives on the part of provincial governments,” he said. “It’s just that naturally, when you set your rules, you’ll arrive at potentially slightly different rules.”

He said that provinces have many priorities to focus on, such as schools and hospitals, and harmonizing regulations with their neighbours is “really difficult.”

Sean Speer, a public policy analyst and senior fellow at the University of Toronto’s Munk School of Global Affairs, has suggested governments should use artificial intelligence to “create an apples-to-apples comparison across the provinces” for various regulations, and propose ways to harmonize rules.

“A major obstacle to eliminating interprovincial trade barriers is actually identifying them,” he wrote on the platform X last month.

What’s the economic impact?

In a report Tombe co-wrote for the Macdonald-Laurier Institute in 2022, he estimated that eliminating interprovincial barriers could boost Canada’s gross domestic product by between 4.4 and 7.9 per cent over the long term.

He pointed out that result would require the elimination of all barriers and probably wouldn’t be apparent for several years.

At the time it was published, Tombe’s paper estimated that opening up interprovincial trade could increase the size of the national economy by $200 billion. He said that increase in value would reach about $245 billion today — meaning thousands of dollars per person.

Tombe said that Statistics Canada data on exports and imports by province suggests that just one-third of Canadian trade by GDP is interprovincial, with the rest of it moving on to other countries.

He said that illustrates how it’s often easier for businesses to trade goods with foreign countries than across provincial lines.

What has the Trudeau government done to fix this?


Ottawa brought the provinces together to sign the Canadian Free Trade Agreement in 2017, which has led to some provincial and federal rules being softened or repealed to make them more uniform.

Some economists have criticized the agreement for retaining hundreds of exceptions to rules meant to ensure barrier-free trade.

“Despite some partial efforts to reduce barriers in the past, provinces have been reluctant to pursue further measures,” Scotiabank economist Jean-François Perrault wrote in a March 2022 analysis.

Tombe said the 2017 pact is “really meaningful” in that it created an institutional process for provinces to identify irritants and harmonize regulations. But the process itself is slow, he said.

He added that Ottawa has limited control over how provinces regulate within their jurisdiction.

The federal government has convened meetings and has launched surveys and databases meant to identify barriers and ways they can be removed.

Ottawa also has published a building code that provinces can choose to adopt to harmonize the construction sector.

The federal government also standardized electronic hours-tracking for commercial drivers and consolidated 14 food safety regulations into a single set of rules.

What would the Conservatives do?

Conservative Leader Pierre Poilievre has said he’d prioritize tackling a patchwork of trucking regulations, arguing it should be the easiest way to get more Canadian goods moving across provincial borders.

He also has said he would remit tax revenue to provinces that scrap regulations preventing interprovincial trade, and use the added federal tax collected from the resulting increase in commerce.

That idea stems from Scotiabank’s 2022 analysis, which argued such a move could eventually generate $15 billion in federal revenues.

Poilievre also said he would standardize certifications for medical personnel — though past governments that have attempted to do so have faced pushback from regulators and unions.
Would resolving these barriers insulate Canadians from tariffs?

Tombe said scrapping barriers would boost productivity and unlock economic growth — but even swift action would take years to deliver real gains.

“There’s no avoiding a recession, if indeed the U.S follows through with permanent 25 per cent tariffs on Canada,” he said. “But over time, we could potentially more than compensate.”

This report by The Canadian Press was first published Feb. 3, 2025.