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New evidence suggests the dwarf planet was a muddy ocean world that froze over time.

Donald Johanson reflects on his fossil discovery that shook the human family tree a half century ago.

The true container of the human soul.

Ice age skeletons could reveal secrets of small cat evolution.

The blunt impact of ocean pollution, in one photograph.

Julie Sedivy on the 3 greatest revelations she had while writing her new book Linguaphile.

Artificial intelligence could transform how the government works—but it’ll be a daunting transition.

Alexander Graham Bell reflects on the very first telephone call in a letter to his father.

A tale of ecological salvation in Mexico.

Scientists have created a magnificent portrait of every connection among neurons in a fruit fly’s brain.

How scientists unraveled the rare condition of organs being reversed in people

A new wave of experimental therapy is enlisting MDMA in relationship counseling.