Why does the new year begin on January 1?

New Year's Day is a civil event. Its date isn't precisely fixed by any natural seasonal marker.

Giant squid surfaces in Japanese harbor

Rare encounter with a giant squid. First one caught on camera was in 2012.

Climate change rapidly warming world’s lakes

Lakes around the world are warming rapidly, threatening ecosystems and water supplies, says a new study that looked at more than half of Earth's freshwater supply.

Lifeform of the week: Mistletoe

Mistletoe makes merry at its host's expense.

November 2015 warmest on record

November was a whopping 1.75°F (0.97°C) above 20th century average. Also, hottest January-November in the 136-year NOAA record.

Global impacts of strong 2015 El Niño

People the world over are feeling, or soon will feel, the effects of the strongest El Niño event since 1997-98.

Historic rainfall floods southeast India

More rain fell in 24 hours - in the city of Chennai, India - on December 1-2, 2015, than since 1901.

Looking for meteorites in Antarctica

One-minute video on searching the Antarctic ice sheet for meteorites from outer space.

Strong earthquake off Indonesia’s Ambon island

USGS reports a 6.9-magnitude quake this morning - a strong earthquake - in the ocean near Indonesia's Ambon Island. Why this region is prone to strong earthquakes.

Vast river network once flowed across Sahara

Scientists have captured amazing new radar images of a paleoriver network underneath the desert sands of the Sahara.