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Science & Society

Celebrating successes while examining failures

Editor in Chief Nancy Shute discusses this year's 10 scientists to watch and the ups and downs of the scientific endeavor.

Planetary Science

Readers contemplate water on Mars and more

Readers had questions about the significance of finding water on mars, air pollution from wildfires and spray-on sensors.

Health & Medicine

A new vaccine raises hopes of someday curbing the tuberculosis epidemic

A new vaccine for those infected, but not sick, with tuberculosis reduced new active cases by 54 percent, compared with those given a placebo.

Math

Here’s why we care about attempts to prove the Riemann hypothesis

The Riemann hypothesis could hold the key to understanding prime numbers.