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Animals

8 Sep

Newly-Discovered Dinosaur Weighed As Much As 7 T. Rex

Just how big was Dreadnoughtus, a newly-discovered dinosaur that roamed Earth around 77 million years ago?

Absolutely massive.

"It weighed as much as a dozen African elephants or more than seven T. rex," Drexel University paleontologist Kenneth Lacovara, who discovered the dinosaur in Argentina, said in a statement. "Shockingly, skeletal evidence shows that when this 65-ton specimen died, it was not yet full grown. It is by far the best example we have of any of the most giant creatures to ever walk the planet."

The 85-foot-long, 65-ton creature had "a body the size of a house, the weight of a herd of elephants, and a weaponized tail," Lacovara described. As such, Dreadnoughtus' name was chosen because it means "fears nothing."

Dreadnoughtus is part of a group of supermassive planet-eating dinosaurs called titanosaurs.

 How did a Tyrannosaurus rex bite compare with a modern alligator? Find out:

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2 Sep

Cannibal Crickets Are Invading The U.S. (But No Need To Panic, Probably)

Voracious, rapacious crickets are flooding into the United States and there's "no end to the invasion in sight." Good luck, and may the force be with you.

Wait, let's back up.

Greenhouse camel crickets (Diestrammena asynamora) are native to Asia and weren't thought to be common in the U.S. until one was discovered by happenstance in the home of a North Carolina State University.

In a sample of 10 homes in Raleigh, North Carolina, researchers "found large numbers of greenhouse camel crickets, with higher numbers being found in the areas of the yards closest to homes."

"The good news is that camel crickets don’t bite or pose any kind of threat to humans," Dr. Mary Jane Epps, lead author of a paper -- "Too big to be noticed: cryptic invasion of Asian camel crickets in North American houses" -- about the research, said in a statement.

Camel crickets have insatiable appetites for anything and everything -- even members of their own species -- but the researchers say the public shouldn't panic about the foreign invasion.

"Because they are scavengers, camel crickets may actually provide an important service in our basements or garages, eating the dead stuff that accumulates there," the paper's co-author Dr. Holly Menninger, said in a release.

Can't get enough? Meet a reclusive spider with a ravenous appetite:

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28 Aug

WATCH: Scientists Raised 111 Fish To Walk On Land

Screen-Shot-2014-08-28-at-10.50.59-AMFish that can walk on land and breathe air exist, and they're providing important clues to how their ancient ancestors evolved from swimming in the sea to living on land.

In a study published in the journal Nature, researchers at McGill University studied Polypterus senegalus (the Senegal bichir or "dinosaur eel"), fish with "functional lungs and strong fins" that can pull themselves out of the water.

The scientists raised 111 juvenile bichir on land for eight months and monitored changes compared to a control group of fish remaining in water.

"Fish raised on land walk with a more effective gait," lead author Emily Standen told The Verge. "They plant their legs closer to the body’s midline, they lift their heads higher, and they slip less during that walking cycle."

Scientists found major differences between land-raised and aquatic-raised bichir, NBC News reports:

"They found that the land-raised fish lifted their heads higher, held their fins closer to their bodies, took faster steps, undulated their tails less frequently and had fins that slipped less often than bichir raised in water. The land-raised fish also underwent changes in their skeletons and musculature that probably paved the way for their changes in behavior. All in all, these alterations helped bichir move more effectively on land."

So, what does it all mean for the study of evolution?

"This is the first example we know of that demonstrates developmental plasticity may have facilitated a large-scale evolutionary transition," Hans Larsson of McGill University said in a statement, "by first accessing new anatomies and behaviours that could later be genetically fixed by natural selection."

For more, learn how another species of fish also evolved a unique method for getting a meal:

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15 Aug

5 Fun Shark Videos For Your Friday Viewing Pleasure

In honor of Shark Week, here are five favorite shark videos that we've shared on SCI2. Head over to SCI2 to see more incredible science videos from around the Internet.

Great White Shark Poops Underwater, Delights Divers

Shark Spits Water Into Man's Mouth

Dolphins Save Swimmer From Nearby Shark

6 Animals More Dangerous Than Sharks

Face-to-Face With Sharks

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7 Aug

Giant Penguins Roamed Antarctica 40 Million Years Ago

A long time ago in a galaxy not-so-far away, massive penguins roamed wild.

The time: 37 to 40 million years ago.

The place: Antarctica.

New fossil evidence reveals that these now-extinct penguins stood more than six feet tall and weighed around 250 pounds. Palaeeudyptes klekowskii, dubbed the "colossus penguin," was far larger than today's biggest penguin, the Emperor penguin, which can grow to heights of about 3.7 feet.

Our friends at SourceFed break it down:

Modern penguins may be much smaller than their ancient ancestors, but their will to survive and thrive is extraordinary:

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10 Jul

410-Million-Year-Old Arachnid Brought Back to Life in Extraordinary New Video

A 410-million-year-old relative of modern-day spiders crawls again in a remarkable new video from scientists at The University of Manchester and Berlin's Museum für Naturkunde.

The team used fossils to recreate the ancient arachnid's movements on open-source software; the creature is now extinct but "300 to 400 million years ago, seem to have been more widespread than spiders," palaeontologist Dr. Russell Garwood said in a statement.

Watch the arachnid in action:

If this arachnid were still living today, might it face off with the ogre-faced spider? We can only speculate...

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7 Jul

Chimpanzees and Humans Have Something Big in Common: We Both Hunt and Eat Meat

Humans share over 90 percent of our DNA with chimpanzees and we share something else too: chimps and humans are the only "higher primates" that hunt and eat meat.

Mutant Planet returns tonight at 10/9c on Science Channel with a look at the unique creatures that call Africa home. The show opens by exploring the predator-prey relationship between red colobus monkeys and chimpanzees. Chimps love eating fruit and plants but, sometimes, they also have a taste for meat -- and red colobus are their favorite prey.

Recent research from the Proceedings of the National Academy of Sciences found that adult male chimpanzees regularly eat meat, although the bulk of the chimp diet comes from plants.

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16 May

On Endangered Species Day, Here's An Elephant Playing A Harmonica

In honor of Endangered Species Day -- and simply because it's a Friday -- here's a video of Shanthi, an Asian elephant living at Smithsonian's National Zoo, playing the harmonica. She truly has some elephant-sized pipes!

According to the World Wildlife Fund, endangered Asian elephants are classified as a "priority species," with between 25,600 and 32,750 animals living in the wild.

The zoo notes that Shanthi is not being prompted to play but instead blows into the instrument using her own free will.

"We offer the elephants opportunities to do the same things that they would do in the wild... only they get to do them here for pleasure, almost, and in the wild they have to do them to survive," an elephant keeper says in the video.

Are elephants self-aware?

See more talented animals and other cool science videos on SCI2.

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15 Feb

Happy World Pangolin Day!

We're as happy as a pangolin in mud to wish you a very happy World Pangolin Day.

Not familiar with this scaly cutie? Allow us to introduce you.

A pangolin is a nocturnal mammal found in Africa and Asia. Sometimes called "scaly anteaters," pangolins mostly eat ants and termites, and are endangered at least in part because some cultures believe pangolins have magical powers:

"When mixed with bark from certain trees, the scales are thought to neutralize witchcraft and evil spirits. If buried near a man’s door, they are said to give an interested woman power over him. Sometimes the scales are burned to keep lions and other wild animals away. In some areas, pangolins are sacrificed for rainmaking ceremonies; in other areas, they are hunted for meat."

While some pangolins dig burrows several feet under the ground, we're pretty sure the little guy in the above video is just enjoying splashing in the mud as much we did as kids. Sometimes, there's no scientific reason behind what we do!

Want to see a pangolin in person? Visit San Diego Zoo to hang out with Baba the tree pangolin.

For something a little less cute and cuddly, check out the preserved pangolin presented to the team from Oddities:

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7 Jan

This Is Why It Takes Forever For Fido To Find The Perfect Place To Poop

You know how annoying it is when your dog has to scratch, sniff and turn in circles to find the perfect place to do his business? There may actually be some science behind the seemingly random movements.

A new study published in the journal Sci Channel Dog Comic 1_Final.jpg found that dogs "preferred to excrete with the body being aligned along the North–south axis."

In other words, your pup has a butt compass. And listening to that internal compass is more than just a preference, according to the study: "Our analysis of the raw data (not shown here) indicates that dogs not only prefer N-S direction, but at the same time they also avoid E-W direction."

The scientists observed 70 dogs of 37 breeds during a two-year period during walks in open fields, "and routes of walks were routinely changed to exclude or limit pseudoreplications which would arise when dogs are defecating or urinating at just a few places within their kennel or house yard."

This is only true when the Earth's magnetic field is calm -- about 20 percent of daylight hours, the researchers said.

Why are dogs so sensitive to the Earth's magnetic field lines?

"We don't know yet," study coauthor Dr. Sabine Begall told HuffPost Science. "We can only speculate. Since it is the polarity that has an effect on the alignment direction, it could be that the dogs somehow calibrate their compass or read their 'mental map' during the walks."

Take a compass next time you walk your dog and let us know what you discover! Do you believe it?

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Illustration by Cuddles and Rage

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