Over the next 30 years, a third of the world's glaciers classified as World Heritage sites will have disappeared, according to a UNESCO report published last month. But what will that look like on the ground? Argentina is home to some 16,000 glaciers that have been closely watched for years. The data is particularly alarming.

Glacial runoff is likely causing "viral spillover" events in high Arctic lakes, researchers have found in a new study. But thankfully, the chances that this might cause a pandemic are very low.