Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The tree of life ...

No, not that Twilight Zone… Although, given the original show is in black and white, seeing a rainbow fish in The Twilight Zone would be something. We mean the ‘twilight zone’ reefs. According to a ...

While native to Western North America, rainbow trout have become one of the most popular freshwater gamefish around the globe through stocking programs. They are coveted by both conventional and fly ...

These are the majestic emperor penguins for years, antarctic researchers have said their numbers are dwindling as the landmasses they live on have been disappearing before our very eyes. And now us ...

Video above: Emperor Penguins now considered ‘threatened species’ under the U.S. Endangered Species ActThe tree of life grew in 2022 as California Academy of Sciences researchers and their ...