Louise Lerner

Dark energy, explained

Coined by University of Chicago astrophysicist Michael Turner in 1998, dark energy—the force causing the universe to expand faster over time—remains one of the great mysteries of physics.

Cosmic rays, explained

Trillions upon trillions of cosmic rays hit the Earth every day. What are they?

The first nuclear reactor, explained

The world’s first reactor was built underneath the stands of a University of Chicago stadium as part of the Manhattan Project—kicking off the Atomic Age.

Carbon-14 dating, explained

First developed in the late 1940s at UChicago, carbon dating can determine the age of organic materials as old as 60,000 years.