Lawmakers warned that Russia and China are already waging a hidden campaign across Europe using cyberattacks, sabotage, ...

Anyone who steps onto Mars will be crossing a one-way threshold in more ways than one. The physics of getting there and back, the biology of living in low gravity, and the psychology of leaving Earth ...

Researchers are edging closer to something long imagined but never quite within reach: a single vaccine platform that could be adapted to fight many kinds of cancer. Early experiments in animals and ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.