91色情片

Even though periodic mass extinctions, dead dinosaurs, cometary cosmic
missiles, doomsday asteroids, Nemesis death stars, huge Earth craters, volcanic
pollution and cosmic winters enliven the pages of John and Mary Gribbin鈥檚 Fire
on Earth (Simon & Schuster, 拢16.99, ISBN 0 684 81689 X) the
level-headed and considered opinions of sensible scientists shine throughout
this fascinating and eminently readable book.