This is how extinction happened. I saw it on news.bbc.co.uk.
From the Mysteries of the Universe Explained challenge. See all 150 entries (closed)
( , Sun 1 May 2005, 11:41, archived)
From the Mysteries of the Universe Explained challenge. See all 150 entries (closed)
( , Sun 1 May 2005, 11:41, archived)