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Remote lakes in New Brunswick, Canada, remain dangerously polluted, half-a-century after being drenched with the insecticide, DDT, says study.

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It's no secret that the now-infamous bug-killer, DDT , persists stubbornly in the environment. Still, what scientists found in lake sediments they recently analyzed in the Atlantic province, 50 years after it was last used there, shocked them. The sediment in all five lakes they tested (representing numerous watersheds), were laced with DDT at levels up to 450 times beyond what would be considered safe for key aquatic species and even entire food webs. by Larry Powell A plane sprays DDT on bud worms in Oregon, 1955.  Photo by Forest Health Protection. In some ways, it was like a real war. In the early fifties, governments and the forest industry teamed up in New Brunswick to launch a massive aerial assault against spruce bud worms.  The pests had probably been eating their way through conifer stands in eastern Canada and the U.S. for thousands of years. But now, they were causing hundreds of millions of dollars of damage yearly to forests of mostly spruce an

Plant Species Have Been Disappearing 500 Times Faster Than Normal, Thanks to Humans

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Smithsonian.com Omar Monsgur exhibits endangered plants in Puerto Rico. US Fish & Wildlife photo. Researchers call the results “frightening” because it’s likely “gross underestimate” and the problem is probably much worse. Story here.

Older forests resist change, climate change, that is

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Science News A  forest in Maritime Canada. A PinP photo. With age, forests in eastern US and Canada become less vulnerable to climate change, study finds.  Story here .

'Existential' Risk of Climate Crisis Could Lead to Civilizational Collapse by 2050, Warns Report

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Common Dreams Drivers near Ponoka, Alberta face smoke from wildfires burning further north. 2019 photo by TaqaSanPedroAko. "The world is currently completely unprepared to envisage, and even less deal with, the consequences of catastrophic climate change." More here.

Loss of Canadian Arctic sea ice stokes summer heat waves in southern U.S.

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PHYS ORG Drift ice in the Arctic ocean. Wickimedia commons. Over the last 40 years, Arctic sea ice thickness, extent and volume have declined dramatically. Now, a new study finds a link between declining sea ice coverage in parts of the Canadian Arctic and an increasing incidence of summer heat waves across the southern United States. Story here.

Downpours of torrential rain more frequent with global warming

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PHYS ORG Flooding in Saskatchewan. A PinP photo. The frequency of downpours of heavy rain—which can lead to flash floods, devastation, and outbreaks of waterborne disease—has increased across the globe in the past 50 years, research led by the University of Saskatchewan (USask) has found. Story here.

Climate change is already affecting global food production—unequally

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PHYS ORG A soy field in Canada. A PinP photo. The world's top 10 crops— barley, cassava, maize, oil palm, rapeseed, rice, sorghum, soybean, sugarcane and wheat—supply a combined 83 percent of all calories produced on cropland. Yields have long been projected to decrease in future climate conditions. Now, new research shows climate change has already affected production of these key energy sources—and some regions and countries are faring far worse than others. Story here.