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Supernumerary rainbow over NYC
Look inside the bright primary bow for colorful fringes, whose number and spacing can change from minute to minute. Alexander Krivenyshev caught this one over New York City on Saturday, July 8.
July 10, 2017
Sunspot, and chance of weekend storms
Experts say there's a 60% chance this weekend of geomagnetic storms, possibly causing auroras. Plus, over the past couple of days, a lone sunspot has grown rapidly!
July 7, 2017
Breathtaking night-shining clouds
Wonderful video showing noctilucent - or night-shining - clouds recorded on July 1 and 4. These clouds shine in the darkness, typically on summer nights.
July 7, 2017
If greenhouse gas emissions ended now…
Would climate change stop? The simple answer is no. A climate scientist explains.
July 7, 2017
Earthquake rocks Montana early Thursday
The 5.8-magnitude earthquake in western Montana took place just after midnight, local time. It woke people up near the epicenter and was felt throughout the region. Expect aftershocks.
July 6, 2017
US Southwest wildfires still burning
Across the US Southwest - amid a record-breaking heat wave - fires that started in early June continue to burn.
June 26, 2017
Global coral bleaching event likely ending
Good news for coral reefs at last! After 3 years, the global coral bleaching event is likely over, scientists say.
June 22, 2017
Climate change shrinking Colorado River
Ongoing drought - and increasing temperatures - have reduced water flow in the Colorado River, with more dramatic reductions expected. This ongoing, unprecedented event threatens water supplies in cities in the U.S. West and some of the most productive agricultural lands anywhere in the world.
June 15, 2017
Video: Greenland’s thinning ice
The ice sheets are melting from both above and below, say scientists.
June 13, 2017
Cottonwood trees and the snows of June
Cottonwood trees in the American West are a nuisance to some and a treasure to others. They yield shade, beautiful foliage and, in June, a kind of warm, fluffy "snow."
June 12, 2017
