Enzymes are the molecular machines that power life; they build and break down molecules, copy DNA, digest food, and drive virtually every chemical reaction in our cells. For decades, scientists have ...

Science is what scientists do – it’s an activity and a process, not a single thing. Solskin/DigitalVision via Getty Images Curious Kids is a series for children of all ages. If you have a question you ...

The deterioration of the Earth’s ozone layer, which protects the planet from harmful radiation, was viewed as an existential threat to humanity for decades. But today, you rarely hear about it. Ever ...

Gretchen T. Goldman is the president and chief executive of the Union of Concerned Scientists, based in Washington DC. The scientific community needs to recognize these trends and fight back in every ...

Is it possible that other universes exist beyond our own? What do we know about matter and antimatter? For centuries, scientists have tried to unravel the secrets of the cosmos. Yet there is still so ...