In Anchorage, Alaska, you never know when a moose will show up on your doorstep
The foreign-born frontiersman became one of the 19th century's greatest wildlife artists and a hero of the ecology movement
When Luna, a people-loving orca, chose Vancouver Island's Nootka Sound for his home, he set in motion a drama of leviathan proportions
Researchers make an annual pilgrimage to Twinsburg, Ohio, to study inherited traits
Northwest of Seattle, an overly friendly orca polarizes a community
A disastrous chain of events nearly wiped out California's diminutive island fox. Scientists hope it's not too late to undo the damage
Microscope jockeys from around the world enter their masterpieces in an annual art show
The California condor learns from people, other condors and the school of hard knocks
Wielding cutting-edge science and lots of patience. James Hill Craddock hopes to restore the ravaged American chestnut tree to its former glory
From the Chesapeake Bay to Panama, scores of Smithsonian divers probe underwater mysteries
Are you a superstar? Just stick out your tongue and say "yuck"
Weighing threats on land and from the sea
Global warming threatens to swamp a small island nation
Pent-up water and steam threaten to burst through the park's surface. (And we're not talking Old Faithful here)
The orbiting space telescope has captured star births and deaths, galactic collisions and the accelerating expansion of the universe
When the first astronauts to walk on the Moon returned from their July 1969 lunar expedition, they were confined to quarters
British horsewoman Francesca Kelly brings India's fiery Marwari to the United States in hopes of reviving the breed
Persuaded that guilt alone won't get Americans to pay more for environmentally friendly coffee, importers give farmers the tools to grow better beans
The president envisions a future human mission to Mars, but medical researchers say surviving the journey is no spacewalk
Sure, the new Kids' Farm at the National Zoo will be educational, but a giant rubber pizza and a "caring corral" will make it also a place for fun
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