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On Your Birthday, You’re Not Celebrating What You Think
Scientists are trying to study biological aging without defining it, and that’s a problem.
How Water Can Identify Murder Victims and Fake Scotch
These maps pinpoint an object’s origins by the isotope ratio in the water.
To Understand Facebook, Study Capgras Syndrome
This mental disorder gives us a unique insight into the digital age.
Natural Selection in an Outbreak
Every time a disease spreads, it has another chance to mutate.
Feel Different: Breaking Your Cell Phone’s Hold
Unreliable rewards trap us into addictive cell phone use, but they can also get us out.
The Martians Are Coming—and They’re Human
How settling Mars could create a new human species.
Only Street Dogs Are Real Dogs
Purebreds don’t satisfy the biological definition of a species.
