"Susan Monarez is no longer director of the Centers for Disease Control and Prevention," the Department of Health and Human Services wrote in a social media post. Her lawyers said she had neither resigned nor been told she was fired.

Even years after an arm is amputated, the brain maintains a detailed map of the limb and tries to interact with this phantom appendage.

The government's colossal failure to respond after Hurricane Katrina led to major reforms at the nation's top disaster agency. Now, the Trump administration has reversed some of those changes.

After a series of failures during recent test flights, SpaceX's massive Starship had a smooth ride for Tuesday's blastoff and successfully deployed some fake satellites.

People were forced to leave their pets behind during Hurricane Katrina, creating an unprecedented animal welfare crisis that has shaped the country's disaster response ever since.

U.S. officials confirmed a case of the flesh-eating parasite in a person who traveled from El Salvador. Screwworm typically affects cattle in South America but has spread north in recent years.

Thousands of fireflies flicker in the meadows of a sanctuary in southwest Connecticut.

An experiment with threadfin butterflyfish finds that these fish may experience pleasure while being cleaned by bluestreak cleaner wrasse — suggesting this capacity goes far back in animal evolution.

SpaceX wants to put the two-stage rocket's massive booster through its paces. On Sunday, it postponed the launch "to troubleshoot an issue with ground systems."

Some countries, including the U.S., want to mine the seafloor for rare earth elements used in smartphones and electric cars. But other nations are concerned about the environmental impact.