Mind & Brain
Why We Kiss
Researchers are revealing hidden complexities behind the simple act of kissing, which relays powerful messages to your brain, body and partner
Stories by Chip Walter
Biology
The Invention of Childhood, or Why It Hurts to Have a Baby [Excerpt]
At least 27 human species have walked the Earth, but only our lineage survived. Our ancestors may have crossed a cerebral Rubicon that led to babies being born “early”
The Sciences
Affairs of the Lips
Researchers are revealing hidden complexities behind the simple act of kissing, which relays powerful messages to your brain, body and partner
Mind & Brain
Affairs of the Lips: Why We Kiss
Researchers are revealing hidden complexities behind the simple act of kissing, which relays powerful messages to your brain, body and partner
The Sciences
Privacy Isn't Dead, or At Least It Shouldn't Be: A Q&A with Latanya Sweeney
In a post-9/11 world, where security demands are high, personal privacy does not have to be sacrificed, says computer scientist Latanya Sweeney, who discusses a few ways to save it.
Technology
A Little Privacy, Please
Computer scientist Latanya Sweeney helps to save confidentiality with "anonymizing" programs, "deidentifiers" and other clever algorithms. Whether they are enough, however, is another question...
Mind & Brain
Why Do We Cry?
Other animals howl when they are in distress, but only humans weep tears of sorrow—or joy
Technology
Kryder's Law
The doubling of processor speed every 18 months is a snail's pace compared with rising hard-disk capacity, and Mark Kryder plans to squeeze in even more bits
Technology
You, Robot
He says humans will download their minds into computers one day. With a new robotics firm, Hans Moravec begins the journey from warehouse drones to robo sapiens
