Updated: 32 min 45 sec ago
For the first time in two decades, the nation is expanding its oil leases even as prices plunge.
New rhino poaching numbers from South Africa frustrate conservationists, who have been battling illegal hunting for years.
The energy used to produce wasted food generates more than 3.3 billion metric tons of carbon dioxide.
The hand bones of early human ancestors, compared with those of apes and modern people, point the finger at surprisingly early stone tool use.
The spacecraft sends home new views as it rides along with a comet toward the sun.
A rarely seen frilled shark was caught by fishers off the coast of Australia.
A baby bird that resembles a toxic caterpillar is among several animals that masquerade as other species to trick predators.
It's taboo for a woman to write about her private life, says author.
The giant cannibals "speak" in a language of whole-body flashes that scientists are just now starting to understand.
Annual auto show reveals what cars and trucks of the future might look like.
With two spacecraft set to arrive at Pluto and Ceres, 2015 will be the year these mysterious worlds finally come into focus.
Members of the tiger conservation community are hailing a rise in tiger numbers in India.
Charred in an A.D. 79 volcanic eruption, rolled Roman scrolls may yet reveal their message, a study suggests.
A wild snake likely survived its predator's death at the paws of a cat because it was agile and had just been eaten, expert says.
From impossibly fuzzy chicks to superfast divers, see some of our favorite National Geographic pictures of penguins in action.
The Yellowstone River oil spill raises drinking water alarms but is unlikely to affect Yellowstone National Park.
The passive-building standard is catching on in North America, but it also faces challenges.
When one of Earth's slowest mammals mates, "apparently it's very quick."
Half the state’s big trees have been lost since the 1930s, in part because climate change has cut their water supply.
Fish are easy pickings after this slow-moving predator blasts them with a cloud of insulin.