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Meteor

Two Perseid meteors streak across the sky on August 13th, 2015, in the Spring Mountains National Recreation Area, Nevada.
You Might Have Missed

Opioids, Renewable Energy, and Fireballs: Stories You Might Have Missed This Week

Doctors are caught in an illicit opioid scheme, Washington State moves toward renewable energy, and a fireball lights up the Mid-Atlantic.

Environment

Gas on Mars Silent But Not Deadly

Scientists weigh the possibility that methane gas on Mars comes from microorganisms in the soil.