Two species of ancient penguin have been uncovered in a Peruvian desert, including one that stood almost 5 feet (1.5 meters) tall, a new study reports.

His skull pierced by a Spanish musket ball 500 years ago, the earliest documented gun fatality in the New World was an Inca, archaeologists say.

Pictures: First New World Gun Victim

Watch as archaeologists uncover and examine the 500-year-old skeleton of the Inca man they believe was the first shooting victim in the Americas.

Ancient Egyptians coveted the famed gold of the kingdom of Kush. Now, 2,000 years later, evidence of the massive mining operation has finally come to light.

Africa's first sub-Saharan kingdom was in the gold business, newfound artifacts in Sudan confirm. And it may have brought unwanted attention from neighboring Egypt.

Photo Gallery: Gold-Mining, Burial Artifacts

A program to return captive-born giant pandas to the wild in China has suffered a serious setback with the death of a five-year-old male that was released last April.

From moles underground to squirrels in the trees, a variety of animals are impacted by the regular overflow of periodical cicadas, studies suggest.

Mites provide poison frogs with most of their toxic sting, at least in the lowlands of Panama and Costa Rica, a new study shows.

A hurricane even weaker than Katrina could devastate the Louisiana city, despite repairs by the U.S. Army Corps of Engineers, experts say.

In contradiction to a 2005 UN report, a new study of abnormalities in barn swallows suggests that fallout from the explosion is still putting millions of people at risk.

A new tagging study has revealed that large squid may be much more plentiful than previously thought—and that sperm whales may hunt the creatures at their most vulnerable.

Polar explorer Will Steger will lead a team across Canada's Baffin Island to document the ways global warming is impacting humans in the far north.

A cache of 4,300-year-old stone nutcrackers found in Africa pushes back chimpanzee tool use thousands of years, a new study suggests.

Join a team of kayakers as they search for shallow salt lakes—the last remnants of oceans that once covered an arid mountain plateau.

The village was home to the ancient British monument's builders and the site of mass rituals that may link Stonehenge with another "henge," archaeologists announced.