Becky Oskin

The long-vanished Bouvier's red colobus monkey has been spotted again in a remote Congo forest.

A lucky group of ocean lovers got the surprise of a lifetime when a huge sperm whale swam into their live video broadcast.

Bone-eating worms that can devour an entire whale carcass were also feasting on prehistoric reptiles more than 100 million years ago.

Teaching people when and where to swim (to avoid sharks), and improving the emergency response to shark bites, can significantly reduce the number of deaths.

Two hundred years after the biggest volcanic blast in recorded history, scientists have ranked the countries most at risk of another deadly eruption.

Here are the countries most at risk of a deadly volcanic eruption, according to an international team of experts known as the Global Volcano Model network.

New geologic evidence suggests the Isthmus of Panama emerged from the sea up to 15 million years ago, millions of years earlier than thought.

Death by acid was the key killer in Earth's biggest mass extinction, some 251 million years ago.

A powerful portrait of plate tectonics took the top prize this year in NASA's annual photo tourney, called Tournament Earth.

A cracking fireball that exploded over Russia last year appears to share an orbit with a huge asteroid discovered in October 2014.

A tiny flower pressed between layers of sandstone for more than 160 million years could be the earliest angiosperm fossil ever found.

Very low levels of radioactive isotopes leaked from Japan's 2011 Fukushima nuclear disaster have been detected along the North American coast for the first time.

Much of western Canada's glacial ice could disappear by the end of the 21st century.

Colorful, spiky and only a few inches long, three new lizard species discovered in the Andes may be the cutest dragon stand-ins on Earth.

The 2011 Japan tsunami released thousands of tons of ozone-destroying chemicals and greenhouse gases into the air.

A new study has shown that although huge floods are rare in human lifetimes, they are responsible for sculpting the steep mountains in Colorado's semiarid landscape.

The California snowpack is at a record low, and the state announced mandatory water restrictions today.

Stunning new global maps of rain and snow pummeling the planet were released by NASA today.

Even though some polar bears are hunting on land more often in areas hit by shrinking Arctic sea ice, a diet of bird eggs and berries can't sustain these huge animals, a new study finds.

The blackpoll warbler migrates more than 1,500 miles (2,400 kilometers) in two or three days, a new tracking study confirms.

Ordinary tampons can detect sewage pollution, a new study shows.

Yawunik kootenayi, a new Cambrian predator with a wicked set of arms under its four-eyed face, reveals that early arthropods were experimentalists.

In West Antarctica, some ice shelves could melt away within a century.

The oddly calm tornado season owes a debt to the weather patterns responsible for the East's cold, snowy spring and the West's warm, dry drought.