Scientists Debate, Prepare For Killer Asteroid

Earthquakes,  Tsunamis,  Volcanoes.  Now, add asteroids to the list of natural disasters that can threaten humanity and all life on our planet.    For decades, Hollywood films like Deep Impact and Armageddon have let  moviegoers enjoy the terror of fictional earthbound asteroids from the safety of their seats.   But on February 15th of this year, residents of Chelyabinsk in central Russia discovered that the threat is as real as it gets.   That...

© La Voix de l'Amérique - mardi 19 novembre 2013