Mar 31, 2017 PM EDT Mars was once a hot spring planet until the sun washed its atmosphere away and took all of its liquid water.
Jan 25, 2017 AM EST Human activity may be to blame for the extinction of large creatures that roamed Australia.
Jun 28, 2017 AM EDTNASA official says no alien has been found until today.
Jun 28, 2017 AM EDTOver 2,000 computers in about a dozen countries were affected.
Jun 28, 2017 AM EDTDo celebrities really affect marketing?