A new finding that fish feel pain has set off a tortured debate about the ethics of angling

Having logged thousands of hours observing chimpanzees and other apes, Frans de Waal (left, at his Atlanta field station) argues that primates, including humans and bonobos, are more cooperative and less ruthless than once thought.

Rethinking Primate Aggression

Researcher Frans de Waal shows that apes (and humans) get along better than we thought

Kandula frolicking with mother Shanthi at the National Zoo at 8 months.

Great Expectations

Elephant researchers believe they can boost captive-animal reproduction rates and reverse a potential population crash in zoos


Mystery Bumps

Scientists knew that alligators' jaws are covered in bumps but it took biologist Daphne Soares to figure out why

Having stopped a mother bear with a tranquilizer dart shot from the helicopter, Derocher (with Andersen, left, and Instanes, on Spitsbergen Island) tethers the cubs and takes tissue samples to gauge the mother's exposure to industrial chemicals like PCBs.

Bear Trouble

Only hundreds of miles from the North Pole, industrial chemicals threaten the Arctic's greatest predator

Bringing Up Baby

Scientists zero in on the caring and cunning ways of a seldom-seen waterbird


Sea Searchers

Scientists launch a $1 billion effort to track marine life worldwide

Royal Bengal Tiger

Behind the Lines: Close Calls

Danger comes with the territory for our writers


The Bone Collectors

A pair of biologists on Cumberland Island save the remains of dead sea critters for others to study

Eugene Gilbert in Bleriot XI attacked by eagle over Pyrenees in 1911 depicted in this painting

Evidence from the Skies

Animal Old Folks

For the National Zoo's esteemed senior citizens, only the very best in geriatric medical care will do


Phenomena, Comment and Notes

As scientists probe deeper into whether animals really have consciousness, questions arise. If they think, do we want to know what they think about us?

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