The sound of summer is ice cracking as you pour yourself a cold drink. Hearing that snap and pop cools everybody down. But why does ice crack? Periodic Videos explains the reason why ice straight from ...

The helicopter heads out over McMurdo Sound, crossing a monotonous expanse of sea ice broken only by a smattering of icebergs and occasional clusters of Weddell seals. At last, off to one side, you ...

Rise of the Super Cold Moon on the night of Dec. 4-5 My Dad Was Gay — But Married To My Mom For 64 Years. As She Died, I ...