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Why It Pays to Play Around
Play is so important that nature invented it long before it invented us.
The Ancient Rites That Gave Birth to Religion
Sacred beliefs likely arose out of prehistoric bonding and rituals.
Can We Revive Empathy in Our Selfish World?
An experiment shows how to rebuild human compassion.
Evolution Is Really Not That Into Sex
Plants and animals have reproduced without sex for eons. So why did nature bother?
Are Animal Experiments Justified?
A neuroscientist confronts his anguish over experimenting on animals.
Why the Flow of Time Is an Illusion
Getting human feeling to match the math is an ultimate goal in physics.
When Beauty Gets in the Way of Science
Insisting that new ideas must be beautiful blocks progress in particle physics.
The Dam Problem in the West
On a raft trip down the Green River, a writer faces her environmental preconceptions.
A Magician Explains Why We See What’s Not There
Our brain is constantly picturing what the future should be.