News
- Astronomy
A distant quasar may be zapping all galaxies around itself
Star formation has ceased within at least 16 million light-years of the quasar. A similar phenomenon may have fried the Milky Way when it was young.
- Paleontology
The asteroid that may have killed the dinosaurs came from beyond Jupiter
The Chicxulub crater, left behind by the impact, contains elemental traces that suggest the origins of the notorious projectile.
- Environment
More than 4 billion people may not have access to clean water
The new estimate, based on data from 135 low- and middle-income countries, is more than double the World Health Organization’s official count.
