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Articles on Erosion

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A motorist stops to survey the damage to a washed-out roadway near McKay Section, N.S. on July 23, 2023. A long procession of intense thunderstorms dumped record amounts of rain across a wide swath of Nova Scotia, causing flash flooding, road washouts and power outages. THE CANADIAN PRESS/Darren Calabrese

Flood risk mapping is a public good, so why the public resistance in Canada? Lessons from Nova Scotia

Public concerns for real estate value, and a focus on the self, make flood risk maps unpopular. However, these concerns should not dissuade governments from providing resources we can all trust.
Water from the Mackenzie River, seen from a satellite, carries silt and nutrients from land to the Arctic Ocean. Jesse Allen/NASA Earth Observatory

Arctic rivers face big changes with a warming climate, permafrost thaw and an accelerating water cycle − the effects will have global consequences

A new study shows how thawing permafrost and intensifying storms will change how water moves into and through Arctic rivers.
Street flooding has become more common in parts of Honolulu. Eugene Tanner / AFP via Getty Images

More than two dozen cities and states are suing Big Oil over climate change – they just got a boost from the US Supreme Court

Honolulu, Baltimore, Charleston, S.C. and several other cities harmed by rising seas and extreme weather are suing the oil industry. At stake is who pays for the staggering costs of climate change.
Lake Couridjah, Thirlmere Lakes National Park in New South Wales. Shutterstock

We helped fill a major climate change knowledge gap, thanks to 130,000-year-old sediment in Sydney lakes

80% of carbon on land in stored in soil. Our new research investigated how erosion transports this carbon to the bottom of lakes, where it’ll never be released into the atmosphere.
Riverbanks are reinforced to reduce flood risks, but these techniques reduce biodiversity and limit public accessibility. (Shutterstock)

We must rethink the way we build along the St. Lawrence River

The sustainable and inclusive development of the St. Lawrence River is essential. A prolonged laissez-faire attitude will have harmful consequences on people and the environment.

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