ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be ...

A research team led by Dr. Sofia Sheikh of the SETI Institute, in collaboration with the Characterizing Atmospheric ...

Their research reveals which Earthly 'technosignatures' would be easiest to detect from a planet across the galaxy.

The results show that the most detectable signals from Earth are radio waves, particularly from planetary radar emissions, ...