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A powerful, precise language aptitude test is entering civilian life.

How light therapy can treat disorders from depression to Alzheimer’s disease.

Physicists and engineers face off over how to make room for more data.

His curious discovery, 200 years ago, foresaw our expanding universe.

How three groups are competing to make the first extremely large telescope.

The meaning of light through history in science, religion, philosophy, and culture.

Galapagos Finches are famous, yet Darwin learned more about evolution from the plants.

All sophisticated life on the planet Earth may owe its existence to one freakish event.

Past and future may not be what they seem.

Are we willing to speed our lives up indefinitely?

How to see yourself in a world where only math is real.

Our picture of man’s early home has been skewed by modern preconceptions.