This effect wins out over warm air rising. The warm air in a thermal will cool as it rises, until it reaches the temperature ...

Snow persistence — or snow that usually stays on the ground between November and March — was 23.6 per cent below normal levels in the Hindu Kush Himalaya (HKH) region this year, a record low in the ...

Volcanoes have stirred human awe for thousands of years, with their bursts of fire and rivers of molten rock. Yet, beyond the ...