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.

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.