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Want to save carbon and land? Study suggests wooden cities

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Wood is known to be the least carbon-intensive building material
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Housing people in homes made from wood instead of steel and concrete could save more than 100 billion tonnes of carbon emissions while preserving enough cropland to feed a booming population, research suggested Tuesday.

More than half of people globally currently live in cities and this proportion is set to rise markedly by 2050. 

According to some estimates, the infrastructure needed to accommodate up to 10 billion people by mid-century could exceed that constructed since the dawn of the industrial era.

That places a huge emphasis on emissions from construction, one of the most polluting sectors and historically one of the trickiest to decarbonise. 

Were all new construction projects carried out using steel and concrete, that could claim up to 60 percent of Earth’s remaining carbon budget for 2C of warming — that is, how much pollution the global economy can produce and still stay within the Paris Agreement temperature guardrail. 

Scientists in Germany and Taiwan wanted to see how much carbon could be saved if firms switched to wood to build new homes instead.

They used an open-source land use model to simulate four different building scenarios: one with conventional materials like cement and steel, and three with additional demand for timber.

They also analysed how additional high wood demand could be satisfied, where it could be produced, and the impacts new tree plantations might have on biodiversity and crop production. 

They found that housing people in timber homes could avoid more than 100 billion tonnes of CO2 by 2100 — that’s around 10 percent of the remaining 2C carbon budget, equivalent to nearly three years of global emissions.

Wood is known to be the least carbon-intensive building material as trees absorb CO2 as they grow, explained the study lead author Abhijeet Mishra, from the Potsdam Institute for Climate Impact Research (PIK).

“Production of engineered wood releases much less CO2 than production of steel and cement,” he said. “Engineered wood also stores carbon, making timber cities a unique long-term carbon sink.”

He said that engineered wood was the ideal material for constructing “mid-rise” buildings — between four and 12 stories — to house growing urban populations.

The study, published in the journal Nature Communications, found that around 140 million hectares — an area larger than Peru — would be needed to grow new trees to meet the increased demand under the timber-led building scenario. 

But the team calculated that these new plantations could be established on existing areas of harvest forest, and so not impact food supply by eating into crop land. 

“We need farm land to grow food for the people –- using it to grow trees could potentially cause competition for the limited land resources,” said co-author Florian Humpenoder, from PIK.

The authors concluded that planting the necessary additional plantations was possible but would require “strong governance and careful planning” from governments in order to limit their impact on biodiversity.

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TikTok suspends rewards programme after EU probe

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TikTok Lite arrived in France and Spain in March allowing users aged 18 and over to earn points that can be exchanged for goods
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TikTok on Wednesday announced the suspension of a feature in its spinoff TikTok Lite app in France and Spain that rewards users for watching and liking videos, after the European Union launched a probe.

The popular video-sharing social media platform, owned by Chinese company ByteDance, said the suspension would remain  “while we address the concerns that they have raised”.

The European Commission’s top tech enforcer, Thierry Breton, said the EU investigation would continue, stating: “Our children are not guinea pigs for social media.”

TikTok Lite arrived in France and Spain — the only EU countries where it is available — in March. Users aged 18 and over can earn points to exchange for goods like vouchers or gift cards through the app’s rewards programme.

TikTok Lite is a smaller version of the popular TikTok app, taking up less memory in a smartphone and made to perform over slower internet connections.

The European Commission on Monday announced an investigation into TikTok Lite, and threatened to have the rewards programme suspended, raising concerns about the risk to users’ mental health.

The commission demanded TikTok provide more information by a Wednesday deadline, along with any defence against the threatened suspension.

Breton said in a statement that “our cases against TikTok on the risk of addictiveness of the platform continue”.

“We suspect that this (rewards) feature could generate addiction and that TikTok did not do a diligent risk assessment and take effective mitigation measures prior to its launch,” he said.

The probe is the EU’s second against TikTok under a sweeping new law, the Digital Services Act (DSA), that requires digital firms operating in the 27 nations to effectively police online content.

In February, the commission opened a formal probe into TikTok over alleged violations of its obligations to protect minors online.

– TikTok squeezed –

TikTok is also under pressure across the Atlantic.

A bill to ban TikTok cleared the US Congress after the Senate on Tuesday approved legislation requiring TikTok to be divested from ByteDance.

TikTok’s CEO, Shou Zi Chew, said the company would fight the law — which he said amounted to a ban — in US courts.

The European Commission has refused to comment on the United States’ move. Instead it has focused on the EU’s legal arsenal to bring big tech into line with its rules.

The move against the TikTok Lite rewards scheme was the latest instance of the EU flexing that legal muscle against online platforms.

It is also investigating tech billionaire Elon Musk’s X, the former Twitter, over alleged illegal content.

TikTok Lite users can win rewards if they log in daily for 10 days, if they spend time watching videos (with an upper limit of 60 to 85 minutes per day), and if they undertake certain actions, such as liking videos and following content creators.

TikTok is among 22 “very large” digital platforms, including Amazon, Facebook, Instagram and YouTube, that must comply with stricter rules under the DSA since August last year.

The law gives the EU the power to hit companies with heavy fines as high as six percent of a digital firm’s global annual revenues. Repeat offenders can see their platforms blocked in the EU.

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In Brazil, hopes to use AI to save wildlife from roadkill fate

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Some 475 million vertebrate animals die on Brazilian roads every year
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In Brazil, where about 16 wild animals become roadkill every second, a computer scientist has come up with a futuristic solution to this everyday problem: using AI to alert drivers to their presence.

Direct strikes on the vast South American country’s extensive road network are the top threat to numerous species, forced to live in ever-closer proximity with humans.

According to the Brazilian Center for Road Ecology (CBEE), some 475 million vertebrate animals die on the road every year — mostly smaller species such as capybaras, armadillos and possums.

“It is the biggest direct impact on wildlife today in Brazil,” CBEE coordinator Alex Bager told AFP.

Shocked by the carnage in the world’s most biodiverse country, computer science student Gabriel Souto Ferrante sprung into action.

The 25-year-old started by identifying the five medium- and large-sized species most likely to fall victim to traffic accidents: the puma, the giant anteater, the tapir, the maned wolf and the jaguarundi, a type of wild cat.

Souto, who is pursuing a master’s degree at the University of Sao Paulo (USP), then created a database with thousands of images of these animals, and trained an AI model to recognize them in real time.

Numerous tests followed, and were successful, according to the results of his efforts recently published in the journal Scientific Reports.

Souto collaborated with the USP Institute of Mathematical and Computer Sciences.

For the project to become a reality, Souto said scientists would need “support from the companies that manage the roads,” including access to traffic cameras and “edge computing” devices — hardware that can relay a real-time warning to drivers like some navigation apps do.

There would also need to be input from the road concession companies, “to remove the animal or capture it,” he told AFP.

It is hoped the technology, by reducing wildlife strikes, will also save human lives.

– ‘More roads, more vehicles’- 

Bager said a variety of other strategies to stop the bloodshed on Brazilian roads have failed.

Signage warning drivers to be on the lookout for crossing animals have little influence, he told AFP, leading to a mere three-percent reduction in speed on average.

There are also so-called fauna bridges and tunnels meant to get animals safely from one side of the road to the other, and fences to keep them in — all insufficient to deal with the scope of the problem, according to Bager.

In 2014, he created an app called Urubu with other ecologists, to which thousands of users contributed information, allowing for the identification of roadkill hotspots.

The project helped to create public awareness and even inspired a bill on safe animal crossing and circulation, which is awaiting a vote in Congress. 

A lack of money saw the app being shut down last year, but Bager is intent on having it reactivated.

“We have more and more roads, more vehicles and a number of roadkill animals that likely continues to grow,” he said.

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Honda to build major EV plant in Canada: govt source

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Honda hopes to sell only zero-emission vehicles by 2040, with a goal of going carbon-neutral in its own operations by 2050
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Japanese auto giant Honda will open an electric vehicle plant in eastern Canada, a Canadian government source familiar with the multibillion-dollar project told AFP on Monday.

The federal government as well as the province of Ontario, where the plant will be built, will both provide some financial incentives for the deal, according to the source, who spoke on condition of anonymity.

The official announcement is due Thursday, though Ontario premier Doug Ford hinted at the deal on Monday.

“This week, we’ve landed a new deal. It will be the largest deal in Canadian history. It’ll be double the size of Volkswagen,” he said, referring to a battery plant announced last year, for which the German automaker pledged Can$7 billion (US$5 billion) in investment.

Canada in recent years has been positioning itself as an attractive destination for electric vehicle investment, touting tax incentives, renewable energy access and its rare mineral deposits.

The Honda plant, to be built an hour outside Toronto, in Alliston, will also produce electric-vehicle batteries, joining existing Volkswagen and Stellantis battery plants.

In January, when news of the deal first bubbled up in the Japanese press, the Nikkei newspaper estimated it would be worth Can$14 billion — numbers backed up by Canadian officials recently.

In the federal budget announced last week, Prime Minister Justin Trudeau’s government introduced a new business tax credit, granting companies a 10 percent rebate on construction costs for new buildings used in key segments of the electric vehicle supply chain.

Canada’s strategy follows that of the neighboring United States, whose Inflation Reduction Act has provided a host of incentives for green industry.

Honda hopes to sell only zero-emission vehicles by 2040, with a goal of going carbon-neutral in its own operations by 2050.

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