Biggest Scientific Breakthroughs Of 2014

This year, humanity landed on its first comet, a child was born to a woman with a transplanted womb, and a fossilized sea shell forced us to reconsider our conceptions of human culture. Those are just a taste of the 20 achievements, innovations, and advances we've selected for our roundup of 2014's biggest… »12/19/14 3:40pm12/19/14 3:40pm

Stem Cells Can Be Turned Into Killing Machines That Fight Brain Tumors

Researchers from Harvard Medical School have genetically engineered stem cells to produce and secrete toxins which kill brain tumors, without killing normal cells or themselves. Though the work was performed on mice, researchers call it "the future of cancer treatment." Clinical trials could start within five years. »10/27/14 11:20am10/27/14 11:20am

"Surprising" Breakthrough in Multiple Sclerosis Mouse Study

In a recent experiment, mice with MS-like symptoms were able to walk and run again just two weeks after being injected with human neural stem cells. Even the researchers were unprepared for these incredible results. Though we're still far from a cure, it's a remarkable finding that hints at similar therapies for… »5/15/14 12:00pm5/15/14 12:00pm