Department of Paleontology staff members Tom Deméré and Kesler Randall measure the length of the tusk discovered at the 16th and Market project site.
Earth's earliest known forms of animal life were trailblazers.
“Vision” in single-celled Synechocystis works by principles similar to the human eye.
The fate of the Caspian seal may have been decided ﬁve million years ago.
Robber ﬂies are top predators in the insect world.