No one even knows how many of the big cats are in the United States
In Russia’s Far East, an orphaned female tiger is the test case in an experimental effort to save one of the most endangered animals on earth
Despite the pain, millions of Chinese women stood firm in their devotion to the tradition
Strengthening the planet’s forests is one critical way to combat climate change
Other questions ask if DNA testing has led to the redesignation of species
Contrary to earlier claims, a new study shows that evolution may be reversible
How “Fulton’s Folly” transformed the nation’s landscape
From our readers
An exhibit in Boston highlights unpublished photos from the acclaimed <i>Life</i> magazine photographer
Canada’s badlands are the place to see fantastic dinosaur fossils (and kitsch)—and eye-opening new evidence about the eve of their fall
A hike to the “top of Texas,” the world’s most famous fossil reef, leads to a new sense of the sublime
One hundred and fifty years later, historians are discovering some of the earliest known cases of post-traumatic stress disorder
The famous naturalist’s revolutionary theory first took shape not in the Galápagos but in the primeval Blue Mountains
The award-winning poet penned this new piece about evolution
More than eight decades after she disappeared in the South Pacific, the aviator continues to spark intense passion—and controversy
Through OpenWorm, scientists are hoping to allow anyone with a computer to unlock the secrets of animal behavior
The visual recording of life in the nation sheds light on a vanished culture
Biographer Taylor Branch makes a timely argument about civil right leader’s true legacy
Evidence that the universe is made of strings has been elusive for 30 years, but the theory's mathematical insights continue to have an alluring pull
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