Mesmerizing reconstructions of long-lost human ancestors - created using fossil discoveries and forensic techniques - from a 2013 book published by Yale Press.
Strong earthquake along coast of central Chile. Same approximate region as much more powerful quake, two months ago. No tsunami warning. No immediate reports of damage or injuries.
Scientists report the loss of phytoplankton - at the base of the ocean food web - from this year's strong El Niño. It's all part of a fascinating cycle of boom or bust for marine animals.
Not a danger to humans ... just a cool example of nature's power. The Crack, as locals call it, is now hundreds of yards (meters) long and still growing.
A study suggests that, by the late 21st century, temperatures in the Persian Gulf might routinely edge above a tipping point for human survival. Wealthy areas might be able to adapt, poorer areas less able, the authors say.