Nov 22, 2013 — As the nation pauses to reflect on what happened in Dallas 50 years ago, we look back at his "ask not" speech. Watch the video and read his words.
Nov 20, 2013 — Life on Earth is connected to the stars in ways we couldn't imagine a thousand years ago. Physicist Marcelo Gleiser says the journey to understanding our relationship with the cosmos has transformed how we see ourselves and all that surrounds us.
Oct 27, 2013 — Just a few decades ago, polio was crippling more than a thousand children each day. Now the paralyzing virus remains endemic to only three countries. A timeline shows how polio went from one of the most feared illnesses to a disease on the ropes.
Oct 26, 2013 — We usually associate fish sauce with Southeast Asian cooking. But it turns out the briny condiment also has deep roots in Europe, dating back to the Roman Empire. What caused its decline? Historians say it boils down to taxes, and pirates.
Oct 22, 2013 — A team led by Emily Thompson, a history professor at Princeton, has matched noise complaints from New York City in the Roaring '20s with the actual street sounds of the day.
Aug 28, 2013 — Chicago Pastor Archibald Carey Jr. ended his address to the 1952 GOP convention with a call to "let freedom ring" that King would echo in 1963 at the March on Washington. Decades later, a recording of Carey's address has been found.
Aug 28, 2013 — Here's where to see or listen to coverage of Wednesday's ceremony. Among those scheduled to speak: President Obama; former presidents Carter and Clinton; and Caroline Kennedy, daughter of the nation's 35th president.
Aug 16, 2013 — Google's announcement that users of Gmail have no "legitimate expectation" that their emails will be kept private is only the latest example of the erosion of personal privacy. This leads commentator Alva Noë to ask: if privacy is so important to people, why do we do so little to secure it?
Aug 10, 2013 — In the old days, a case of the nerves, constipation or a general lack of vitality could lead someone to try a patent medicine. Though filled with sketchy ingredients, the old remedies may have worked sometimes, too.
Jul 29, 2013 — The photographer behind a touching photo of five children that gained a lot of attention recently says that it is "good to know that even in this day and age, when we are bombarded by imagery from every direction, that one photograph can matter to someone."