Uncategorized
- Science & Society
50 years ago, the United States wanted to deflate the helium stockpile
An attempt to dismantle the Federal Helium Reserve in 1971 failed. Fifty years later, the U.S. government is still determined to run out of gas.
- Humans
Neandertal DNA from cave mud shows two waves of migration across Eurasia
Genetic material left behind in sediments reveals new details about how ancient humans once spread across the continent.
- Planetary Science
Earth sweeps up 5,200 tons of extraterrestrial dust each year
Thousands of micrometeorites collected from Antarctica come from both comets and asteroids, a new study suggests.
- Life
Only 3 percent of Earth’s land hasn’t been marred by humans
A sweeping survey of terrestrial ecosystems finds that vanishingly little land houses all the animals it used to.
