Tia Ghose

The moon was once thousands of miles farther away than it is now, and Earth's days were 2.2 hours longer, a new study finds.

Scientists sequenced the largest known animal genome in a species of lungfish — ancient fish that breathe air.

A new study has cleared up misconceptions about the extinct dodo, identifying the reference specimen for the species and showing they were fast and powerful.

Defense systems found in all complex life, including the human body, came from primeval microbes known as 'Asgards.'

SpaceX Polaris Dawn astronaut Jared Isaacman briefly "touched the void" as he embarked on the first-ever private spacewalk Thursday (Sept. 12).

Expect an above-average hurricane season, forecasters say.

From the humble trillion to Graham’s number, here are some of the most massive numbers ever conceived by humans.

Scientists reprogrammed a woman's fat cells to become insulin-making beta cells, reversing her type 1 diabetes.

A small trial used designer CAR T cells to reboot the immune systems of patients with three autoimmune diseases, but it's still too early to say whether the treatment works in the long term.

Scientists have designed special immune cells that protect transplanted pancreatic cells from attack in mice.