Articles by

John Timmer Ars Technica

Bats Raised in Helium-Rich Air Reveal a Key to Echolocation

To test bats’ sense of the speed of sound, researchers put them in an atmosphere that alters...

How Food Waste Could Be Turned Into Climate-Friendly Jet Fuel

Humans dump an estimated 10 billion gallons of potential biofuel into landfills every year. Researchers found a...

Indoor-Grown Weed Is Spewing Carbon Into the Atmosphere

Most legal marijuana is grown in a controlled environment. A study just quantified how much damage that's...

Million-Year-Old DNA Rewrites Mammoths' Evolutionary Tree

The oldest DNA ever sequenced shows how the genus split off into new species. Ancient...