Three short novels by some of science fiction's greatest writers -- Ursula K. Le Guin, James Tiptree, Jr., and Gene Wolfe, edited by Robert Silverberg.
_The New Atlantis_, by Ursula K. Le Guin: In a dark near-future, global warming and a ruined ecology is causing the continents to sink into the oceans just as the towers of Atlantis re-emerge above the sea.