The wildfire situation in northern California is slowly improving, but there's still a lot of work to do.
Nearly all men and women will become infected with at least one type of HPV, a group of 150 related viruses, at some point in their lives.
A new study found exposure to air pollution in utero could shorten life expectancy.
Opioid-related deaths have fell by more than 6 percent in Colorado in the two years after the state started selling recreational marijuana.
A recent discovery confirms a long-standing hypothesis: that neutron star collisions helped form the chemistry of our universe.
2017 has seen some of the most frequent and most expensive climate disasters ever - and the year isn't over.
Ruptured pipes, inactive treatment plans and possible mismanagement have left Puerto Ricans struggling to find clean water.
Researchers are looking into psychedelics as possible treatments for depression, anxiety and even PTSD.
For the sale of every animal that is not a rescue, pet stores will be fined $500.
Saturday morning, officials said crews were fighting 16 large fires that had burned over 214,000 acres and destroyed thousands of structures.
The Trump administration wants to make the U.S. more coal-friendly, but many plants that once created power from coal have already left the industry.
As of Friday, 10 counties had air quality that the Environmental Protection Agency considers "unhealthy."