eventually opts to just phone instead.

Internal Revenue Service National Office, Beaumont, Texas (4,819 square feet)Mine Safety Health Administration, Beaver Dam, Ky. (2,814 square feet)

Indian Health Service-Bemidji, Bemidji, Minn. (4,896 square feet)Bureau of Reclamation, Bend, Ore. (3,386 square feet)Internal Revenue Service National Office, Birmingham, Ala. (7,580 square feet)

United States Fish and Wildlife Service, Bismarck, N.D. (21,372 square feet)Internal Revenue Service National Office, Bloomington, Minn. (26,910 square feet)

Federal Highway Administration, Boise, Idaho (5,179 square feet)

Geological Survey, Boulder, Colo. (29,170 square feet)While the exact timing of humans’ arrival in the Americas remains contested — and may never be known — it seems clear that if the first people arrived earlier than once thought, they didn’t immediately decimate the giant beasts they encountered.

And the White Sands footprints preserve a few moments of their early interactions.As Odess interprets them, one set of tracks shows “a giant ground sloth going along on four feet” when it encounters the footprints of a small human who’s recently dashed by. The huge animal “stops and rears up on hind legs, shuffles around, then heads off in a different direction.”

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.VIENNA (AP) — As construction crews churned up dirt to renovate a Vienna soccer field last October, they happened upon an unprecedented find: A heap of intertwined skeletal remains in a mass grave dating to the 1st-century Roman Empire, likely the bodies of warriors in a battle involving Germanic tribes.