The ocean’s bad boys don’t just cruise alone—they have preferred swimming partners.

But growing up can help these famed Chesapeake crustaceans. Breakthroughs, discoveries, and DIY tips sent six days a week. Cannibalism is the number one killer of the crustaceans that congregate in mid-salinity waters like coastal estuaries. As a result, the blue crabs are relying on the safety of some threatened shallow water habitats, according to a study published today in the journal Proceedings of the National Academy of Science (). The lives of blue crabs are anything but boring.

This section from Archimedes Palimpsest has a mixture of ancient geometry and Byzantine prayers. The missing page still has traces of geometric diagrams based on Greek mathematician Archimedes of Syracuse's work. Breakthroughs, discoveries, and DIY tips sent six days a week. The Archimedes Palimpsest is a Byzantine prayerbook written in 1229, but the artifact holds more than what immediately meets the eye. The original writing on its pages was erased and replaced--making it a palimpsest--a common practice during the medieval period for expensive writing materials made from animal-skin like parchment.

The team observed the gentle giants two days in a row. Blue whales can be found in every ocean except the Arctic. Breakthroughs, discoveries, and DIY tips sent six days a week. As if soaring above the brilliant blue ocean isn't spectacular enough, the New England Aquarium's aerial survey team recently experienced two back-two-back sightings of blue whales --a little déjà blue, per the aquarium's clever social media post. The first sighting occurred on February 27, when scientists from the Aquarium's Anderson Cabot Center for Ocean Life spotted a blue whale ().

Why some people get motion sickness--and others don't When your eyes, ears, and brain don't agree, it can mean bad news for your stomach. "Everyone is capable of motion sickness," says Dr. Kristen K. Steenerson, a clinical associate professor at Stanford University School of Medicine. Breakthroughs, discoveries, and DIY tips sent six days a week. A couple of years ago, I found myself traveling along the Drake Passage to Antarctica when our ship encountered a patch of 15-foot-tall swells. Waves were slamming against the exterior of our vessel, causing nauseated passengers to run to their rooms and stay there.

Environment Animals Wildlife Birds The world's oldest wild bird has a new grandchick Biologists have been tracking Wisdom, the roughly 75-year-old Laysan albatross, since the 1950s. Albatross chicks are getting stronger. Breakthroughs, discoveries, and DIY tips sent six days a week. The U.S. Fish and Wildlife Service is shining a light on a new member of a famous feathered family--that of the world's oldest known breeding bird, a Laysan albatross called Wisdom. The agency posted a video on social media featuring a scruffy looking hatchling seemingly yawning as it hangs out in the sand in close contact with a giant bird --presumably one of its parents.

Project Acoustic Kitty went about as well as you'd expect. The CIA tried to train cat spies. Breakthroughs, discoveries, and DIY tips sent six days a week. Here's the scene: A man wearing a trench coat and a fedora sits on a park bench, looking up frequently from his newspaper to cast furtive glances at passersby. A stray cat wanders by.

Breakthroughs, discoveries, and DIY tips sent six days a week. A newly uncovered tyrannosaur leg bone is shaking things up in the dinosaur world. The leg bone uncovered in New Mexico belongs to an unusually large tyrannosaur--the group of dinosaurs that includes the mighty . The shinbone is three feet long and about five inches in diameter, only slightly smaller than the largest known specimen. The giant leg bone is detailed in a study published today in the journal .

From reducing dementia to speeding up recovery after surgery, music is more powerful than you knew. Listening to music can help your brain, research suggests. Breakthroughs, discoveries, and DIY tips sent six days a week. The oldest known musical instruments-- flutes carved from bones --are over 40,000 years old . And humans were likely making music before that, based on fossils showing our ancestors had the ability to sing over 530,000 years ago.

Do any bugs live in the ocean? Crustaceans and insects share a common ancestor, but bugs are happier on land. Water striders are the only insect that live entirely on the ocean's surface. Breakthroughs, discoveries, and DIY tips sent six days a week. By some estimates, insects make up 80 percent of named animal species.