(CNN) — Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Heat-trapping methane may be best known for the ...

Heat-trapping methane may be best known for the dangers it poses to humans and Earth’s atmosphere, but in the dark depths of the ocean, the greenhouse gas is a nourishing meal for some of the world’s ...

A subgroup of air-breathing, terrestrial (land) arthropods, spiders are not actually insects but rather belong to the Class ...

Spiders are those unwanted guests who are sharing your space without paying rent. Spiders might not be everyone’s favorite roommates, but they’re definitely fascinating (and surprisingly helpful). But ...

It’s tarantula mating season in Southern Colorado and Northern New Mexico. The big spiders crawl across roads and between scrubby vegetation on the plains. You’ll often see dozens of the eight-legged ...