Tau Ceti has habitable planet, just 12 light years away

One of the closest stars to our own, Tau Ceti, appears to have five planets, including one that's in the so-called habitable zone and could be suitable for life.

SETI embarks on biggest-ever search for extraterrestrials

The Search for Extraterrestrial Intelligence (SETI) is turning its focus once again on some of the stars that were its very first targets back in 1960.