Even sperm gotta stick together. Bull sperm swim more effectively when in clusters, a new study shows, potentially offering insight into fertility in humans. In simulated reproductive tracts of animals…
Category: Animals
Tree-climbing carnivores called fishers are back in Washington’s forests
Holding an antenna above his head, Jeff Lewis crept through an evergreen forest in the Cascade mountains, southeast of Seattle. As he navigated fallen fir logs and dripping ferns, he…
Video captures young mosquitoes launching their heads to eat other mosquitoes
A kind of teenager mosquito can suddenly shoot its head forward from its body — stretching its neck into a skinny cord — to bite into another youngster. And that’s…
‘Wonderful nets’ of blood vessels protect dolphin and whale brains during dives
If you look at parts of the circulatory system of whales and dolphins, you might think that you are looking at a Jackson Pollock painting, not blood vessels. These cetaceans…
This spider literally flips for its food
For one tiny Australian spider, somersaulting is the secret to taking on ants twice its size. Ants — armed with powerful jaws and sometimes chemical weapons — are so dangerous…
Marcos Simões-Costa asks how cells in the embryo get their identities
Growing up in Brazil, Marcos Simões-Costa often visited his grandparents’ farm in the Amazon. That immersion in nature — squawking toucans and all — sparked his fascination with science and…
A Caribbean island gets everyone involved in protecting beloved species
The coral reef, once bustling with more than 5,000 long-spined sea urchins, became a ghost town in a matter of days. White skeletons with dangling spines dotted the reef near…
After eons of isolation, these desert fish flub social cues
Getting out into society after a long isolation gets awkward. Ask the Pahrump poolfish, loners in a desert for some 10,000 years. This hold-in-your-hand-size fish (Empetrichthys latos) has a chubby,…
Drumming woodpeckers use similar brain regions as songbirds
Songbirds get a lot of love for their dulcet tones, but drummers may start to steal some of that spotlight. Woodpeckers, which don’t sing but do drum on trees, have…
Video shows the first fox known to fish for food
The fox froze. Inches from his paws, frenzied, spawning carp writhed in the shallow water along a reservoir’s shore. In a sudden flash of movement, the fox dove nose-first into…
