The pastoralists in Africa sustainably produce meat and milk to help feed the continent. But their way of life — and work — is under threat. Food...

Lera Boroditsky is trying to figure out how humans get so smart. Watch her full TED Talk:

Singer-songwriter Mike Posner took a break from his music to take a walk — a very long walk, across the entire United States. He shares five lessons...

Organ transplants save lives, but they come with challenges: every minute a healthy donated organ is on ice increases risk. And even if things go...