The expedition leader, Donald B. MacMillan, wrote that his dogsled team “covered 180 miles in five days, worked hard every day and did not receive one ounce of food.”
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.