Gerald Walker

108 Flips | 9 Magazines | @GeraldWalke42si | Keep up with Gerald Walker on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Gerald Walker”

Recreating the Glue Neanderthals Used to Make Weapons

There are some things people can't live without, so we invented them way before we ever invented writing: coats, knives, roofs, fire, just to name a …

Yes, humans are still evolving. Here's how you can tell.

Even more evidence that we’re continuing to change.<p>The nice thing about bacteria is that they multiply really fast. This is inconvenient if they happen to infect, but useful if you want to see how evolution works. Put antibiotics on a Petri dish with enough bacteria, and a few days later you’ll …

Biology

Sweating is an essential and uniquely human function

Most furry mammals pant to regulate their body temperature. Other animals, like ectotherms — lizards, amphibians, and insects — have other behaviors that help keep them cool. Humans, however, are in a category of our own.<p>We are the only mammal that relies on secreting water onto the surface of our …

What Ligers, Grolar Bears, and Mules Show Scientists About Evolution

In 2006, a hunter shot what he thought was a polar bear in the Northwest Territories of Canada. Closer examination, however, revealed brown patches …

It only takes a few gene tweaks to make a human voice

How and when did we first become able to speak? A new analysis of our DNA reveals key evolutionary changes that reshaped our faces and larynxes, and …

Biologically, Race is Really Only Skin Deep

Decades of research has shown the lack of genetic difference between racial and ethnic groups. The idea of ‘race’ doesn’t hold up to scientific …

Plesiosaur fossil found 33 years ago yields new convergent evolution findings

In 1984, Sankar Chatterjee – curator of paleontology for the Museum of Texas Tech University – and his student, Bryan Small, made an astounding …

Dinosaur find in outback Queensland

The remains of what might be the most complete sauropod dinosaur ever found in Australia have been uncovered by a team including a Swinburne …

This bizarre ancient creature mystified Darwin; now we finally know what it was

Its nose, unlike that of most mammals, was right between the eyes, like an elephant's trunk. It weighed about as much as a horse. Its neck is long, …

New insight into how telomeres protect cells from premature senescence

Researchers at the Institute of Molecular Biology (IMB) and Johannes Gutenberg University Mainz (JGU) have further uncovered the secrets of …

Five Mass Extinctions Wiped out 99 Percent of Species That Ever Lived—Are We Headed for the Sixth?

<i>This article was originally published on</i> The Conversation<i>. Read the original article.</i><p>Of all the species that have ever lived, more than 99 percent …

Scientists Want to Genetically Engineer Heat-Resistant Cows to Survive Climate Change

Umm...<p>The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has proposed a plan to make cows more resistant to the …

Ancient Gap-Toothed Whale Led to Evolution of Efficient Filter Feeding

Geologist Mark Havenstein has always had a knack for finding rare, important fossils. As a child, he found a tooth for the largest shark that ever …

Freshwater male fish exposed to chemicals in water becoming more feminine

(Phys.org)—Professor Charles Tyler of the University of Exeter in Britain (and colleagues) has conducted a study of the impact of chemicals from …

New study reveals how frogs flourished after dinosaurs croaked

A massive asteroid strike that wiped out the dinosaurs millions of years ago created room for frogs to colonize the Earth, said a study Monday that …

The Mutation That Helped Ancient Humans Survive Frostbite Probably Gave Us Arthritis

Careful what you wish for.<p>When humans began their slow migration out of Africa some 100,000 years ago, they carried with them the genetic seeds …

What is genomics, and how can it help you?

The study of genes, called genetics, has been around for decades. But of late, it has been overshadowed by genomics, which studies all the DNA in an …

The Lives of Weird 500-Million-Year-Old Creatures Revealed

<i>This article was originally published at</i> <i>The Conversation.</i> <i>The publication contributed the article to Live Science's</i> <i>Expert Voices: Op-Ed & …

What Does It Mean to Be a Species? Genetics Is Changing the Answer

For Charles Darwin, "species" was an undefinable term, "one arbitrarily given for the sake of convenience to a set of individuals closely resembling …

Research Suggests That Eyes Beat Limbs In The Evolutionary Race To Land

<i>Our editors delve into Curiosity's top stories every day on a podcast that's shorter than your commute. Click here to listen and learn — in just a</i> …

The origins of the human spine might have just been found in a 3.3-million-year-old fossil

Recent analysis of a 3.3-million-year-old hominin fossil found back in 2000 has provided researchers with the most complete spinal column of any early human relative — and gives us a unique snapshot of a crucial transition point as our early ancestors evolved towards bipedalism.<p>According to the …

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Evidence For Evolution (RJS)

April 6, 2017 by RJS<p>At the Christ and Creation conference last Friday morning Dennis Venema and Scot McKnight gave back to back talks based on their …

Evolution

How the horse can help us answer one of evolution's biggest questions

For 600m years, life has been responding to our changing world. Virtually every conceivable environment in every corner of the planet has been …

4 Ways This Revolutionary Gene-Editing Tool Could Change the World

The woolly mammoth has been extinct for more than 4000 years. Now scientists are talking about bringing it back with the help of a powerful gene-editing technique called CRISPR-Cas9.<p>But CRISPR's promise extends far beyond the possibility to resurrect extinct animals. It may also have the potential …

What Are Three-Parent Babies? UK Regulator Grants Licence For IVF Technique

Authorities in the U.K. on Thursday granted the country’s first-ever license to create babies using a “three-parent” in-vitro fertilization (IVF) …

66% of Cancers Are Caused by DNA Error, Not Environment or Lifestyle, Finds Johns Hopkins Study

We usually attribute cancer to inherited genes such as the BRACA1 or BRACA2 mutations, responsible for breast, ovarian, and prostate cancer. Or else, …

CRISPR Will Make Healthy Kids, Not Designer Babies

Thanks to the gene-editing tool CRISPR, scientists can now manipulate DNA to make designer babies and fight inherited disease. Since it has so many …