11.   Forty thousand years ago, according to this theory, when the first anatomically modern humans arrived in Europe, they suddenly developed complex modern behaviors.

12.   It would propel a habitation module, an Earth-return craft and a small truck-sized rover to Mars two years before the first humans are launched.

13.   It might have been butchered by the first humans in the Hudson Valley.

14.   Most archaeologists believe the first humans crossed into the New World on a land bridge in the Bering Strait during the Ice Age.

15.   Not long ago we thought the first humans in the New World were mammoth hunters from Siberia who crossed the Bering Strait at the end of the Ice Age.

16.   She was the first human to spot a chick on Jordan Cliffs this season.

17.   Soviet cosmonaut Yuri Gagarin became the first human launched into space, beating Shepard by less than a month.

18.   That means, he said, that the footprints are the oldest known in Europe and belong to Cro-Magnon man, the first humans known to paint.

19.   The Atlantis crew became the first humans to visit the fledgling station since June as they docked late Saturday.

20.   The discovery that the woman was older than previously thought is important, Johnson said, because scientists still are debating how the first humans entered North America.