On this week's episode: an 11,000 year old ice village in Saskatchewan, cells belch out anti-inflammatory DNA during a workout, turtles have a happy dance, and ancient ducks in Antarctica.

MEXICO CITY (AP) — Mexico’s Popocatepetl volcano rumbled to life again this week, belching out towering clouds of ash that forced 11 villages to cancel school sessions. The residents weren’t ...

MEXICO CITY (AP) — Mexico’s Popocatepetl volcano rumbled to life again this week, belching out towering clouds of ash that forced 11 villages to cancel school sessions. The residents weren’ ...