Happy, a Bronx Zoo elephant who gave researchers new insight into the animal's behavior and became the crux of a closely watched animal rights case, has been euthanized at age 55.

When a species is facing extinction, it takes an enormous human effort to stave it off. Case in point: the painstaking campaign to save the frosted flatwoods salamander.

The space agency outlined the first phase of its moon base plans on Tuesday, awarding hundreds of millions of dollars in contracts to four U.S. companies.

Her abduction at age 14 drew international attention. After her rescue, Smart says she struggled with feeling shame around her body. Bodybuilding has helped her see herself differently.

Insurance is supposed to soften the blow when homes burn or flood. With some preparation, you can better your odds of a smoother recovery if disaster strikes.

One California town is in a state of emergency and 50,000 people are under an evacuation order as a malfunctioning chemical tank at an aerospace plant is overheating and could leak or explode.

Dozens of athletes — including former Olympians — will participate in the Las Vegas event while using performance-enhancing drugs.

The mega rocket made its debut two days after SpaceX CEO Elon Musk announced he's taking the company public. NASA Administrator Jared Isaacman said Starship is now one step closer to the moon.

SpaceX scrubbed the twelfth launch of its newly redesigned Starship moments before liftoff Thursday. The company will try again Friday and it comes at a critical time for SpaceX, which is seeking to go public.

Communities across the U.S. are turning small plots of land into highly dense forests that grow quickly. Turns out these forests have roots to a decades-old planting method that originated in Japan.