529 Results

Only Street Dogs Are Real Dogs

Purebreds don’t satisfy the biological definition of a species.

The Trouble with Milk

Only 1 in 3 people have evolved tolerance to lactose.

Plastic Is the Ocean’s New Junk Food

Is Obesity Thrifty or Drifty?

How an Elephant Loses Its Tusks

Elephants without tusks are a response to the selective pressure of poaching.

The Modern Mind May Be 100,000 Years Old

New fossil evidence shows sophisticated thought began earlier than we thought.