A Question of Gender
Meet Emma, one of 65,000 babies born each year neither male nor female. Once surgeons made them into females. Now parents wonder if these infants shouldn't be left untouched
by Emily Nussbaum, Photographs by Lynn Johnson
Exit From Eden
Six thousand years ago, the Sahara was a fertile savanna teeming with animals and people. How did it become a barren sea of sand - and when will it change back again?
The Shape of Madness
A maverick mathematician thinks he's found schizophrenia's hiding place.
Polly Wanna Ph.D.?
How smart can an animal get? Ask Irene Pepperberg's parrots. They'll be glad to discuss the subject with you
The Year in Weird Science
The Year in Weird Science
The Year in Science
Sinking Chips