Articles on Extreme weather

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Residents try to put out flames as a wildfire threatens homes in Quito, Ecuador, in September 2024. AP Photo/Dolores Ochoa

Wildfire disasters are increasingly in the news, yet less land is burning globally – here’s why

Even though you may mostly hear about fires in the US, Canada, Europe and Australia, it’s Africa that has far and away the most acreage burned and people exposed to fire.
New Orleans residents wait to be rescued from a rooftop two days after Hurricane Katrina made landfall. AP Photo/David J. Phillipp

One of Hurricane Katrina’s most important lessons isn’t about storm preparations – it’s about injustice

Looking back on New Orleans 20 years after Hurricane Katrina is a reminder that while such hazards may be natural, the death and destruction is largely human-made.
U.S. Geological Survey staff check monitoring equipment in Suicide Basin in June 2025. By August, the basin had filled with meltwater. Jeff Conaway/U.S. Geological Survey

Glacial lake flood hits Juneau, Alaska, again, reflecting a growing global risk as mountain glaciers melt

Suicide Basin, an ice-dammed lake on an arm of Mendenhall Glacier, has filled up with meltwater and sent destructive surges of water into Juneau for 3 straight summers.
A worker moves irrigation tubes on a farm in Pinal County, Ariz. A two-decade drought has made water supplies harder to secure. Carolyn Cole/Los Angeles Times via Getty Images

Climate models reveal how human activity may be locking the Southwest into permanent drought

The drought has been linked to the Pacific Decadal Oscillation, a natural climate pattern. A new study finds global warming is now influencing that natural phenomenon.
A tree canopy can make a big difference in temperature for people on the street below. The challenge is getting trees where they’re needed most. Andrey Denisyuk/Moment via Getty Images

Inside an urban heat island, one street can be much hotter than its neighbor – new tech makes it easier to target cooling projects

New technologies are making it easier to find these urban heat islets, opening the door to new strategies for efficiently improving community health.
Cars are partially submerged in flood waters in the Don Valley following heavy rain in Toronto on July 16, 2024. THE CANADIAN PRESS/Arlyn McAdorey

It’s challenging to predict extreme thunderstorms — improving this will help reduce their deadly and costly impacts

Current models for weather forecasting tend to ignore outlier data; learning how to incorporate these can help reduce risk and increase community resiliency.
Ralph Regenvanu, climate change minister of Vanuatu, speaks outside the International Court of Justice in The Hague on July 23, 2025. John Thys/AFP via Getty Images

The World Court just ruled countries can be held liable for climate change damage – what does that mean for the US?

The ruling stems from the harm island nations are suffering as sea level rises, and it opens a door for future claims for reparations. But getting to that point isn’t so simple.
Rescuers searched for survivors after a flash flood in Texas Hill Country on July 4, 2025, that killed more than 130 people. Jim Vondruska/Getty Images

Why 2025 became the summer of flash flooding in America

Large parts of the central and eastern U.S. have seen at least 50% more precipitation than normal. An atmospheric scientist explains why and what creates flash flood weather.
Search and rescue teams from Kerrville Fire Department walk past debris after flooding near the banks of the Guadalupe River in Kerrville, Texas, on July 8, 2025. (AP Photo/Ashley Landis)

What Canada could learn from the tragic consequences of the Texas flash flood

Flash floods are increasing in frequency, severity and impact. The Canadian government needs to learn from the Texas tragedy and co-ordinate weather information and warning systems.

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