Over 100 years ago, and after decades of protest, women's suffrage was granted in the U.S.
A 328 million-year-old cephalopod may be the oldest in a group related to octopuses and vampire squids.
A look at the "God particle" — its theoretical origins, its discovery in 2012, and its continuing significance.
There are five basic human senses: touch, sight, hearing, smell and taste. Other senses also help us understand and perceive the world around us.