Notebook
- Animals
How spiders mastered spin control
Scientists reveal a new twist on the unusual properties of spider silk.
- Science & Society
To combat cholera in Yemen, one scientist goes back to basics
As the cholera epidemic rages on in war-torn Yemen, basic hygiene is the first line of defense.
- Planetary Science
What Curiosity has yet to tell us about Mars
Curiosity has revealed a lot about Mars in the last five years. But NASA’s rover still has work to do on the Red Planet.
- Health & Medicine
One in three U.S. adults takes opioids, and many misuse them
More than a third of U.S.
