Timothy Williamson

Children love exploring the world around them, and our list of best microscopes for kids will help them do just that.

Reference The Endurance Expedition was a failed mission to cross the Antarctic on foot, leaving 28 explorers stranded.

Reference NATO is an alliance of 30 member states, each with a pledge to protect other members if attacked.

Inside the latest History of War: How the first president and Founding Father learned the art of command while serving with the British.

Reference The history of computers began with primitive designs in the early 19th century and went on to change the world during the 20th century.

Reference The term transgender describes people whose gender identity differs from the sex to which they were assigned at birth.

Reference Exactly how accurate are DNA tests, and how much can your genetic data really reveal about you? To find out, we asked a molecular biologist.