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Where narwhals like to hang out
Narwhals are among the ocean's most elusive creatures. But new research may shed light on where these enigmatic marine mammals like to congregate.
February 18, 2018
New study: Sea level rise accelerating
Global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and European satellite data.
February 16, 2018
Day Zero approaches as Cape Town’s water runs out
Cape Town - the South African city of 3.7 million people - is on the verge of running out of water. Day Zero is the day the taps will get turned off.
February 11, 2018
What is radiocarbon dating?
At a very steady rate, unstable carbon-14 gradually decays to carbon-12. The ratio of these carbon isotopes reveals the ages of some of Earth's oldest inhabitants.
February 9, 2018
View of Winter Olympics from space
Ready for the Olympics? Here's a look at the sites of the 2018 Winter Games, the South Korean cities of Pyeongchang and Gangneung, from above.
February 8, 2018
Harvard study links breast cancer to light at night
Artificial light has transformed the night sky, a change researchers continue to link to health problems.
February 8, 2018
Humans witnessed fire-covered Earth at end of Ice Age
New research suggests that some 12,800 years ago, an astonishing 10 percent of the Earth’s land surface was consumed by fires, thanks to a cosmic impact.
February 7, 2018
Volcán de Fuego from Earth and space
Volcán de Fuego - literally "fire volcano" - is one of Central America’s most active volcanos. Photos of its recent eruption here.
February 5, 2018
Scientists solve a methane puzzle
Since 2006, levels of heat-trapping methane in Earth's atmosphere have risen sharply. A new study settles a disagreement about the source.
February 4, 2018
Is a major California earthquake overdue?
According to current forecasts, California has a 93% chance of an earthquake of magnitude 7 or greater occurring by 2045.
February 3, 2018
