Articles on Snow

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In the upper Midwest, aging infrastructure, from dams to city drains, was overwhelmed by floodwater in April 2026. Jonathan Aguilar/Milwaukee Neighborhood News Service/CatchLight via Getty Images

Heavy rain on snow is testing aging dams across Michigan and Wisconsin – this is the future in a warming world

Days of intense rain and snowmelt overwhelmed old dams and breached roads, forcing evacuations. Nearly half the counties in Michigan – often seen as a climate haven – were under a state of emergency.
Wildflowers grow in sight of a snow-covered mountain. AscentXmedia/iStock/Getty Images Plus

Why do mountaintops stay snowy?

The answer has to do with the air we breathe and that bright white snowpack, as an atmospheric scientist in Colorado explains.
The setting sun shines on the snow-covered top of Rainbow Mountain, in Whistler, B.C., in November 2022. Snow cover is becoming more intermittent, particularly during early winter and spring transitions. THE CANADIAN PRESS/Darryl Dyck

Warming winters are reshaping Canada’s snowpack

Climate change is altering not only how much snow falls, but where snowpack persists and how long it lasts.
Olympic rings are displayed in the snow at the Stelvio Ski Centre, venue for the alpine ski and ski mountaineering disciplines at the 2026 Milan Cortina Winter Olympics in Bormio, Italy, in January 2025. (AP Photo/Luca Bruno)

As the climate changes, what does the future hold for the Winter Olympic and Paralympic Games?

For the Winter Olympic and Paralympic Games, climate change poses a risk and could impact where the Games can be held in the future.
U.S. skier Rosie Brennan leads a group during the women’s team sprint classic cross-country skiing competition at the 2022 Winter Olympics. AP Photo/Aaron Favila

What Olympic athletes see that viewers don’t: Machine‑made snow makes ski racing faster and riskier – and it’s everywhere

US Olympic skiers and scientists explain the sharp differences between natural snow and machine-made snow, from the science to the rising risk of crashes.
Italy’s Predazzo Ski Jumping Stadium, which is hosting events for the 2026 Winter Olympics, needed snowmaking machines for the Italian National Championship Open on Dec. 23, 2025. Mattia Ozbot/Getty Images

Climate change threatens the Winter Olympics’ future – and even snowmaking has limits for saving the Games

Innovations have made recent Winter Games possible, but the future climate will have a big impact on where the Olympics can be held and winter sports themselves.
As temperatures rise, the timing of the ice thaw changes. Vincent Denarie via Arctic Report Card

From record warming to rusting rivers, 2025 Arctic Report Card shows a region transforming faster than expected

The 20th anniversary of the annual report tracks how sea ice, snow cover and many other vital signs of the Arctic have changed, and the impact that’s having on people and wildlife.

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