Chinook, coho, and steelhead populations in the Salish Sea have declined by up to 90 percent over the past 40 years. Canada declared several populations of steelhead endangered in 2020. Unpicking exactly how and why fish are crashing has proved hard. Whatever happens to the fish out at sea has been seen as something of a black box, so much recent research has focused on marine survival. Those efforts point to multiple culprits for declining salmon numbers, including climate change, overfishing, reductions in the salmons’ food, and rebounding populations of seals and Steller sea lions that gorge on the fish. Wilson’s research, however, highlights the need to keep our eyes on terra firma.
Logging has long been known to have big impacts on the well-being of fish. Watershed logging was improved after the 1990s “War in the Woods” in British Columbia—salmon streams are better protected under regulations now—but remains a concern. Reducing shade over rivers can boost water temperature, which can be good or bad for spawning fish. Removing roots loosens soils and causes turbidity. Fewer logs may fall into streams, reducing the number of pools and turns that salmon like. A recent study by David Reid, completed when he was a postdoctoral researcher at the University of British Columbia, found the full impacts of logging can take a surprisingly long time to kick in. “It might take decades,” he says.
Wilson’s paper aims to weigh up riverine against marine survival. “It’s nice to see these components linked together,” says Reid.
This is all because of toxic smog across much of northern India. It happens every winter as industrial and vehicular emissions mix with smoke from crop-burning after the harvest.
The line calling for the "phase-down of unabated coal" and an end to "inefficient" fossil fuel subsidies is unprecedented in a COP agreement, experts say, even if it was weakened.
The previously undiscovered signal, now known as an “anti-predator pipe, shares acoustic traits with alarm shrieks, fear screams and panic calls of primates, birds and meerkats,” according to the study.
It’s the governmental and capitalist systems that have made life on the planet untenable. It’s abhorrent that the burden of environmental collapse falls first on the shoulders of young people and the global south, when oil corporations and countries like the United States carry an outsized responsibility for the crisis.
"It’s a threat multiplier that amplifies and accelerates existing inequities," she said during "gender day" at the summit, according to the New York Times. "Eighty percent of people displaced by climate change globally are women." The United Nations, which organized the summit, said women are more vulnerable to climate change due to social, economic and cultural factors.
A vast stretch of the Yamuna river is covered with white toxic foam, caused in part by pollutants discharged from industries ringing New Delhi. Still, on Wednesday, hundreds of Hindu devotees stood knee-deep in its frothy, noxious waters, sometimes even immersing themselves for a customary dip to mark the festival of Chhath Puja.
Predicting faster sea level rises and more frequent and extreme storms due to global warming, the government said it could only afford to keep defending the village for another 40 years. Officials said that by 2054, it would no longer by safe or sustainable to live in Fairbourne. Authorities therefore have been working with villagers on the process of so-called “managed realignment” -- essentially, to move them away and abandon the village to the encroaching sea.
Twenty-four countries and a group of leading car manufacturers have committed to ending the era of fossil-fuel powered vehicles by 2040 “or earlier”, in a major new commitment set at Cop26.
Industrial chicken, pork and dairy production, Holden argues, are only possible because of environmentally unsustainable grain monocultures; stop these and cheap, polluting meat production would end.
Flint managers appointed by then-Gov. Rick Snyder and regulators in his administration allowed the city to use the Flint River in 2014-15 without treating the water to reduce corrosion. As a result, lead in old pipes broke off and flowed.