After a stretch of warm, humid and often unstable conditions, drier and cooler air is moving into Chicagoland for a while.

Unstable temperatures increases risk of heat related death by up to 2900 per cent, study claims An average of 490,000 people die every year from heat-related issues globally Furvah Shah ...

Glaciers in Europe's Alps are becoming more unstable and dangerous, as rising temperatures linked to climate change are reawakening what were long seen as dormant, almost fossilized sheets of ice ...