The Heat-death of the Universe reference article from the English Wikipedia on 24-Apr-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Heat-death of the Universe

Sponsor with the world's largest charity for orphans
The heat death is a possible final state of the universe, in which it has reached maximum entropy. If the universe lasts for an infinite time, then it will asymptotically approach a state where all energy is evenly distributed.

Despite its name, in the heat death scenario, the entire universe would be very close to absolute zero.

See also: Big Bang, Dyson's eternal intelligence, Ultimate fate of the Universe