Researchers have found a way to increase the number of hair cells they can generate from stem cells found in mice ears from 200 to 11,500. The death of hair cells accounts for 90 percent of hearing loss, so if these newly generated cells are functional, they could restore hearing for millions of people worldwide.

Thanks in part to the installation of a new offshore wind turbine installation, Denmark was recently able to power the entire country for a day with wind energy alone. As many countries continue to incorporate renewable energy, successes like this show just how much is possible.

This year's Prius Prime, and probably the next Tesla vehicle, will feature a more efficient solar panel from Panasonic. For the Prius, the solar panel will increase the car's efficiency by up to 10 percent and add 2.2 miles of electric range.

Civilians Are No Longer Off Limits in Today’s Armed Conflicts