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Biblical signs in the sky on September 23, 2017?
A mirror in the sky to "signs" from the Bible's Book of Revelation? Possibly. But this same sky scene has been seen 4 other times in the past 1,000 years. An astronomer explains.
September 23, 2017
Zap! Biologist measures electric eel’s shock on his own arm
Talk about dedication to science! This biologist stuck his arm into an eel tank - 10 times - to get an accurate measure of an eel's shock. He said it felt "like touching a horse fence."
September 20, 2017
See it! Dance of planets before dawn
Mars emerged before dawn last week, to meet Mercury below bright Venus. And then the moon passed through. Thanks to all who submitted photos!
September 19, 2017
Humans are still evolving, say scientists
Scientists have identified genetic variants less common in older people than younger people. They say it's natural selection at work, continuing to weed out disadvantageous traits.
September 17, 2017
Openings in Antarctic sea ice influence global climate
Heat escaping through openings in sea ice influences sea and atmospheric temperatures and wind patterns around the globe - even rainfall around the tropics, says new study.
September 13, 2017
Our Age of Humans in a galactic context
A proposed new classification system - somewhat like the well-known Kardashev scale for classifying extraterrestrial civilizations - and a new way of thinking about human sustainability on Earth.
September 12, 2017
NASA ponders Saturn mission legacy
A statement from NASA's Jet Propulsion Laboratory on Cassini mission success at Saturn, and on where solar system exploration will go from here.
September 11, 2017
How nuclear war would affect Earth’s climate
The climatic effect of a large-scale conflict "... would be similar to that of the giant meteor believed to be responsible for the extinction of the dinosaurs. This time, we would be the dinosaurs."
September 8, 2017
Human antidepressants found in brains of Great Lakes fish
“Fish are receiving this cocktail of drugs 24 hours a day, and we are now finding these drugs in their brains.”
September 7, 2017
