Woman hasn't used shampoo in more than 3 years
Lucy Aitken Read stopped using shampoo after she read it might have potentially harmful chemicals.
Scientists Create Concussion Pill
New studies about concussions could be bringing big changes to athletes who play contact sports and even sufferers of Alzheimer's and watch a…
Companies pledge $140B to fight climate change
Some huge companies are part of the White House's new initiative to combat global warming ... except oil companies, perhaps the biggest offenders.
Science, tech leaders warn of AI arms race
Elon Musk, Steve Wozniak and Stephen Hawking are part of a group asking the United Nations to limit or ban "offensive autonomous weapons."
Snakebite stirs debate on cost of treatment
A rattlesnake bite left Todd Fassler with a hospital bill of more than $150,000.
Calif. water shortage stokes wildfire problems
Firefighters are still working to control a Napa Valley, California, wildfire that's spread to about 7,000 acres.