Sunday's supermoon, combined with an 18.6-year lunar cycle, caused high tides on both sides of the Atlantic this week. There were many flood warnings and alerts in effect in the UK on Tuesday night. In eastern North America, Tropical Storm Joaquin might combine with high tides to cause flooding.

Worst recorded years for U.S. wildfires are 2005, 2006, 2007, 2011 and 2012. This year has already joined that list, and wildfire season is still going strong.

“Right now, the monsoon is 12 percent below average and dropping, and [India is] headed for a pretty serious dry season,” said a researcher.

At least five people killed and 1 million evacuated, after a powerful 8.3-magnitude earthquake off the coast of Chile last night. Tsunami waves and many strong aftershocks followed. Tsunami advisory for California and Hawaii.

Wow! Check out this visual comparison of the emerging El Niño with the record-breaking El Niño of 1997-98, which created weather extremes around the globe.

Scientists using the Large Hadron Collider (LHC) have produced tiny droplets of a state of matter thought to have existed right at the birth of the universe.

Scientists say they have found a total of 1,550 bones representing 15 individuals. They say it's the largest fossil hominin find on the African continent.

Three International Space Station crew members will leave the spacecraft and return to Earth on Friday, September 11. Watch their departure and landing.

Thinking of plants and animals - including humans - as independent individuals might be an oversimplification, according to modern thinking in microbiology.

A new study estimates that almost all seabirds have eaten plastic.