The climate is warming overall, but our cold spells seem worse than ever. That’s because a warming Arctic alters the jet stream that used to protect us from Arctic blasts, which now spill farther into ...

Warming temperatures from climate change cause tree swallows to nest up to two weeks earlier than they did in the 1970s, but ...

Real-time tools, visuals, and other resources to quantify the role of climate change in weather events. Alerts We issues alerts in many instances when the Climate Shift Index identifies a notable ...

Cold weather can be tough, with icy ground, biting winds and bitter frosts – and even the risk of snow. But it's even tougher for small birds living outside, who can lose weight and struggle to ...

When the peaks of the Sangre de Cristo mountains become snowcapped, a flurry of bird adaptations sweeps across the foothills. We marvel at the continent-spanning journeys of migratory birds seeking ...

The results of a 60-year study of more than 80,000 wild great tits, Parus major, are out and shedding light on the impact of extreme weather on this ubiquitous songbird in the UK. Researchers at the ...

As winter loosens its cold grip on New England, morning bird song fills the air even before the sun comes up. But as the climate warms, backyard birds once seen as signs of spring, are now year-round ...

This phenomenon provides valuable insight into climate change and its impact on evolution. There are exceptions to Bergmann’s rule, such as small burrowing animals that can change their microclimates ...