After more than 20 years, NASA today said goodbye to the Cassini space probe and sent it plunging into Saturn's atmosphere to burn up. It was the end of a remarkable mission that revealed deep secrets of the ringed planet and its many moons.
Florida utility representatives say parts of the state will require a "wholesale rebuild of our electrical grid" after Hurricane Irma left millions without power. How can Florida and other states build electrical grids that are resilient to natural and other disasters?
Not long ago, the most popular explanation for any dangerous teenage behavior was raging hormones. Fast-forward a few years and the explanation changed: The teenage brain is actually biologically different. A teen’s prefrontal cortex is less developed than in adults. Now, a new study from the University of Pennsylvania suggests your teen’s bad decisions are driven by something else entirely.
The discovery of two giant holes in the ground in far northern Russia is raising all kinds of speculation about their origin. No one yet knows for sure how they were formed, but a leading scientist is pointing to an ever-more usual suspect—climate change.
Scientists thought they knew how the human body worked. They thought they knew how the immune system worked. They were wrong. A recent discovery found a previously unknown path for the immune system into the brain.
NASA’s Dawn spacecraft already racked up several firsts during its seven-year flight from Earth, and now it's the first-ever spacecraft to orbit a dwarf planet. Scientists are hoping its yearlong stay at Ceres, in the asteroid belt between Mars and Jupiter, will help reveal clues about how Earth got its water.
Barack Obama's article in the top academic journal, Science, argues that the clean-energy revolution is irreversible and highlights the economic benefits of cutting carbon emissions and investing in renewable energy.