News
- Physics
New claim staked for metallic hydrogen
Scientists report transforming hydrogen into a metal at high pressure, but some experts dispute the claim.
- Life
Mouse cells grown in rats cure diabetes in mice
Mixing cells of two species produces pig and cattle embryos with some human cells.
- Physics
Chemists strike gold, solve mystery about precious metal’s properties
A longstanding puzzle about gold’s properties has been solved with more complex theoretical calculations.
- Life
What a mosquito’s immune system can tell us about fighting malaria
Immune system messengers carried in microscopic sacs help mosquitoes fend off malaria, new research suggests.
- Ecosystems
In debate over origin of fairy circles, both sides might be right
Odd bare spots called fairy circles in African grasslands might be caused by both termites and plants.
- Science & Society
Cancer studies get mixed grades on redo tests
Replications of cancer studies fail to reproduce some results.
- Climate
For three years in a row, Earth breaks heat record
Spurred by climate change and heat from a strong El Niño, 2016 was the hottest year on record.
- Earth
Coastal waters were an oxygen oasis 2.3 billion years ago
Coastal waters contained enough oxygen to support complex life-forms including some animals hundreds of millions of years before fossils of such life first appear.
- Climate
Petrified tree rings tell ancient tale of sun’s behavior
The 11-year cycle of solar activity may have been around for at least 290 million years, ancient tree rings suggest.
- Health & Medicine
Promise and perils of marijuana deserve more scientific scrutiny
Report outlines medical potential and health dangers of cannabis and its components.
- Chemistry
New molecular knot is most complex yet
The knot is woven from 192 atoms of carbon, hydrogen, oxygen and nitrogen and forms a triple braid with eight crossing points.
- Neuroscience
How mice use their brain to hunt
Messages from the brain’s amygdala help mice chase and kill prey.
