Scientists used fossil remains and primitive tools to build a vivid description of what life was like for our early human ancestors, 1.8 million years ago.
NASA's Scott Kelly and cosmonauts Sergey Volkov and Mikhail Kornienko landed safely in Kazakhstan on March 2. The landing wraps up Kelly's one-year mission aboard the ISS.
The Aliso Canyon leak, finally plugged on February 11, vented 100,000 tons of methane into the atmosphere - a climate impact equivalent to the annual emissions of half a million cars, say scientists.
More information about early human settlements - and in this case the insects who lived alongside them - is being found in ancient bits of broken pottery.