More than 50 different chemicals are now pumped into consumer products in place of BPA. These BPA-free alternatives can be as bad as — or worse than — the original. ...read more
The discovery hints that subsurface oceans are common in the outer solar system, which is good news for the those seeking extraterrestrial life. ...read more
A new way to count the number of intelligent ET cultures suggests we are far from alone; but also that we may never be able to find them, astronomers say. ...read more
This 7,000-year-old stone circle tracked the summer solstice and the arrival of the annual monsoon season. It's the oldest known astronomical site on Earth. ...read more