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Half of your genome started out as an infection; if left unchecked, some parts of it can turn deadly all over again.

It’s the pursuit, not the goal, worth renewing.

A study challenged the evidence for the mysterious antigravitational force known as dark energy. Then cosmologists shot back.

An organized tide of brain waves, blood and spinal fluid pulsing through a sleeping brain may flush away neural toxins that cause Alzheimer’s and other diseases.

Exploring Howard Nemerov’s poem, “Learning the Trees.”

For the first time, physicists have calculated exactly what kind of singularity lies at the center of a realistic black hole.

Physicists have long searched for hypothesized dark matter particles called WIMPs. Now, focus may be shifting to the axion — an ultra-lightweight particle whose existence would solve two mysteries at once.