Staff at the Chicago headquarters of RR Donnelley, the warehousing and reseller operation, are suing the company over alleged racist and sexist emails distributed at the firm. Over 160 messages have been cited in the suit and over 500 workers at the plant have joined the action.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007