evolution

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Ancient Crystals Rewrite 300M Years of History

Life may have started 'almost instantaneously'

(Newser) - Life of one kind or another has been around on this planet for 300 million years longer than thought, according to US researchers who took a close look at some incredibly ancient crystals unearthed in Australia. The scientists say that the zircon crystals from 4.1 billion years ago contain...

Scientists Uncover Clues About Giraffe&#39;s Long Neck
Scientists Uncover Clues About Giraffe's Long Neck
NEW STUDY
Oct 7, 2015 10:24 AM CDT

Scientists Uncover Clues About Giraffe's Long Neck

Evolutionary bursts occurred 7M and 1M years ago

(Newser) - In further proof that size matters, the giraffe likely developed a long neck so males could battle each other for mates. If you've ever seen a male giraffe whip its foes , you'll know the neck can be an nasty weapon, with the added benefit that giraffes can reach...

Scientists: We've Found a New Human Relative

Experts say Homo naledi may have buried its dead, but others aren't convinced

(Newser) - Scientists say it's a find "unlike anything that we have seen." Deep within a South African cave, experts claim to have uncovered the remains of a previously unknown human ancestor that stood about 5 feet tall, weighed 100 pounds, used tools, and may have buried its dead—...

First Big Predator Was 'Angry' Water Bug

You wouldn't want to swim with 'Pentecopterus decorahensis'

(Newser) - Earth's first big predatory monster was a weird water bug as big as Tom Cruise, newly found fossils show. Almost half a billion years ago, way before the dinosaurs roamed, Earth's dominant large predator was a sea scorpion that grew to 5 feet 7 inches, with a dozen...

Which Animal Is the 'Superpredator'? We Are

The rate at which humans kill animals is not sustainable, study finds

(Newser) - For tens of thousands of years, where humans go, animals are driven to extinction. We are the superpredator, killing animals—and adults ones at that—at a much higher rate than other predators. And it's not sustainable. So say researchers at the University of Victoria in the journal Science...

In Cats vs. Dogs, History Answers
 In Cats vs. Dogs, 
 History Answers 
NEW STUDY
Aug 18, 2015 7:18 AM CDT

In Cats vs. Dogs, History Answers

Cats are responsible for the extinction of 40 early canine species

(Newser) - It's official: Cats are better than dogs. Better predators, that is. So say researchers in the Proceedings of the National Academy of Sciences after looking at more than 2,000 fossils of prehistoric cats and dogs in North America. It turns out that when cats arrived on the continent...

How Fish Could Change to Escape Fishermen
 How Fish Could Change 
 to Escape Fishermen 
new study
Aug 7, 2015 12:00 PM CDT

How Fish Could Change to Escape Fishermen

It's the nature of the hunt that the best swimmers survive—and procreate

(Newser) - Similarly to how superbugs are evolving so that they can survive our best efforts to drug them out of existence, it's possible that fish could evolve to swim faster and thus escape our masterfully constructed nets. So report University of Glasgow researchers in the journal Proceedings of the Royal ...

Boys and Girls Have Different Spines—From Birth

The difference allows the female spine to adapt during pregnancy

(Newser) - Boys and girls have subtly different spines, and the difference is present at birth, according to a new study out of Children's Hospital Los Angeles. Using magnetic resonance imaging (MRI) on 35 full-term newborn girls and 35 full-term newborn boys, researchers report in the Journal of Pediatrics that vertebral...

Chimps Are More Advanced Than Us in One Specific Way

Their hands have evolved more dramatically than humans'

(Newser) - Consider yourself more advanced than a chimpanzee? When it comes to your hands, at least, you might be wrong. American and Spanish researchers who studied the hands of chimps, orangutans, humans, as well as those of human ancestors and ancient apes, say a chimp’s hands have evolved significantly since...

Scientists Can Finally Tell Animal's Head From Its Butt

What experts thought was Hallucigenia's head turned out to be fluid from its anus

(Newser) - A strange sea creature's embarrassment is over. More than a century after the now-extinct Hallucigenia was first found, scientists say they've discovered which end is its face and which is its butt. In Hallucigenia's defense, all fossils of the tiny creature—which was thinner than a hair...

How the Turtle Got Its Shell
 How the Turtle Got Its Shell 
Jun 25, 2015 8:20 AM CDT

How the Turtle Got Its Shell

The 240M-year-old 'grandfather' turtle had no shell and a very long tail

(Newser) - For at least a century, scientists have puzzled over the turtle. Thanks to a gap in the fossil record between 260 million and 220 million years ago, it's unclear how the turtle got its shell and to whom it's most closely related. Now a fossil from 240 million...

Moon Jellyfish Shock Scientists With This Trick

'Symmetrization' has never been observed before

(Newser) - When Caltech biologist Michael Abrams cut two arms off a young jellyfish in 2013, he figured it would do what many marine invertebrates do—grow new ones. But no. "[Abrams] started yelling... 'You won't believe this, you've got to come here and see what's happening,...

Snakes Used to Have Ankles

 Snakes Used to Have Ankles 
study says
May 20, 2015 2:04 PM CDT

Snakes Used to Have Ankles

Ancestor likely had little toes, too

(Newser) - Scientists have created the most comprehensive family tree of snakes to date, and the ancestor at the very top looked different than the snakes we know today in one noticeable way: It "had tiny hind limbs, with complete ankles and toes," says a Yale researcher in a post...

Scientists Uncover Big Clue as to Why Men Exist

Sexual selection, by which males compete for females, improves gene pool: study

(Newser) - Scientists have long wondered why men exist. Sex between males and females is simply not nearly as efficient as asexual reproduction. But now a group out of the UK is reporting in the journal Nature that, after looking at several years of lab-controlled procreation of the Tribolium flour beetle, they'...

Study: How Animals Grew Heads
 How Creatures 
 Began Growing Heads 
study says
May 17, 2015 3:50 PM CDT

How Creatures Began Growing Heads

They started with a hard plate called the anterior sclerite: study

(Newser) - Ever wonder how creatures on Earth grew heads? Probably not, but they seem to have started with a hard plate in front of their brains. A recent study in Current Biology says fossils dating back hundreds of millions of years show the first signs of this plate, known as the...

Scientists Grow Chicken Embryos With Dino Snouts

As part of an effort to learn about beak evolution

(Newser) - It sounds straight out of Jurassic Park: Researchers have successfully created chicken embryos with what LiveScience frames as Velociraptor-like snouts. It's an end that has its beginning in a bird-dino quandary described by Carl Zimmer at the New York Times : "Even the most exquisitely preserved fossil can't...

Back Pain Sufferers Have Less Evolved Spines
 Back Pain Sufferers Have 
 Less Evolved Spines 
STUDY SAYS
Apr 28, 2015 5:21 AM CDT

Back Pain Sufferers Have Less Evolved Spines

Their vertebrae are more like those of chimps than the unafflicted

(Newser) - People who suffer from back pain have been dealt a lousy hand by evolution and might be more comfortable walking on their knuckles like our closest relatives, chimpanzees, according to Canadian, Scottish, and Icelandic researchers. Their study found that lower back pain sufferers have a lesion called a "Schmorl'...

DNA Analysis Fills in Piece of Dolphins' History

It suggests they moved into the Mediterranean roughly 18K years ago

(Newser) - Bottlenose dolphins may be an iconic draw to the Mediterranean, but they're not exactly indigenous. So say researches out of the University of Lincoln in the UK, who report in the journal Evolutionary Biology that the water-dwelling mammals didn't arrive until the end of the last Ice Age...

Scientists Uncover More Disturbing Form of Sexual Cannibalism

Some hungry praying mantises lure in males by lying about their health

(Newser) - If you don't know about sexual cannibalism, here's a quick primer: It's most common among insects and arachnids, and typically involves a female luring in a male for sex only to eat it, often via beheading, thereby promoting egg development and the likelihood of successful procreation. But...

We've Been Able to Hold Our Booze for 10M Years

That may have helped humans live on ground, rather than in trees

(Newser) - Studies have previously suggested that people started drinking alcohol about 9,000 years ago, around when we invented the means of making it. But new research suggests we could handle the stuff far before that: more along the lines of 10 million years, the Los Angeles Times reports. Humans have...

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