Scientists have debated for decades whether the human brain sprouts new neurons throughout life. What would it mean if it could — and how much evidence is enough?

Physicists at CERN’s Large Hadron Collider have captured the clearest evidence yet that quark-gluon plasma, the scorching-hot matter that filled the newborn universe, behaves like a true liquid. By ...

We asked 100 scientists about unsolved problems in their fields. They sent back provocations — on the origins of life, the ...

Ask the right question, and even the strangest thing in the universe eventually gives you an answer. These are 15 insane "why ...

California could create its own multi-billion-dollar science and health research agency under a bill signed by Gov.