A new "Firefly: The Fall Guys" limited comic series is coming in September, returning the crew of the Serenity for more gun-slinging adventures in deep space.

Firefly petunias, genetically modified with bioluminescent mushroom DNA, glow in the dark. The glow, primarily from the flowers, is most vibrant in new blooms and is similar to moonlight.

Firefly petunias, genetically modified with bioluminescent mushroom DNA, glow in the dark. The glow, primarily from the flowers, is most vibrant in new blooms and is similar to moonlight.

The Bethany Beach firefly is in danger of flickering out and becoming endangered, the U.S. Fish and Wildlife Service said Monday. The firefly, found in coastal Delaware, Maryland and Virginia, is ...

A nearly 100 million-year-old firefly fossilized in amber sheds light on how the bioluminescent insects evolved during the time of dinosaurs, a new study finds.