Hansen closed his talk by saying, "Imagine a giant asteroid on a collision course with Earth.
Hansen termina son discours en disant : « Imaginez un astéroïde géant fonçant sur la terre.
Hansen closed his talk by saying, "Imagine a giant asteroid on a collision course with Earth.
Hansen termina son discours en disant : « Imaginez un astéroïde géant fonçant sur la terre.