Does a shroud of energy from the Big Bang bear scars of other universes?
Another human species was alive at the time of Neanderthals.
Astronomers propose a new theory to explain Saturn's unusual rings.
Volcanologists use every device at their disposal to monitor Sicily's Mount Etna.
A huge galactic smash-up may have formed the galaxies nearest us.
The key to defeating tuberculosis may lie in its longevity.
Use of nitrogen fertilizer is radically impacting Earth's nitrogen cycle.
Astronomers say a black hole recently formed in a nearby galaxy.