Google's Alan Eustace fell from an altitude of more than 135,000 feet, plummeting for some 15 minutes. The jump broke the record of 127,852 feet that Felix Baumgartner set in 2012.
Peter Hubbard is one of 20 volunteers in a human safety test of an experimental Ebola vaccine. He tells NPR's Scott Simon about why he signed up and how he has been feeling.
In this week's roundup, Apple rolls out its mobile payment system but confronts a security test in China, the problem with voice mail messages and Mark Zuckerberg shows off his Mandarin.
Facebook's new app, Rooms, harkens back to the days of 1990s anonymous chat rooms. New York Times tech reporter, Mike Isaac, talks about why having secret identities online is a good thing.
AR 2192, the largest sunspot seen since the beginning of the current 11-year cycle that started in 2008, is producing strong solar flares.
New research suggests that curiosity triggers chemical changes in the brain that help us better understand and retain information.
Juan Enriquez argues that human evolution is far from over — Homo sapiens are becoming a new species right before our eyes.
Geneticist Spencer Wells tells the story of early humans, and our eventual migration from Africa.
Geneticist Spencer Wells describes how he uses DNA samples to trace our individual origins going back 2,000 generations.
Louise Leakey describes her family's long search for early human remains in Africa, and how unlocking that mystery is the key to understanding our past and our future.
A new study commissioned by the U.S. Army has found that the mental health of soldiers isn’t as different from civilians as the researchers previously thought.