Josefina Rivera

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Who's The Most High-Strung? [Data Viz]

Everybody gets stressed, but some of us feel it more than others<p>Are you strung out? You're not alone.<p><b>37:</b> Percentage of U.S. adults who feel overwhelmed by stress<p><b>24:</b> Percentage of U.S. women who report extreme stress, compared to 17 percent of men<p><b>71:</b> Percentage of U.S. adults who say money is a …

Sunbathers take heed: skin damage continues hours after exposure | Reuters

WASHINGTON (Reuters) - Here’s a warning to sunbathers everywhere. Scientists have found that the skin damage caused by UV rays does not stop once you get out of the sun.<p>A visitor enjoys the autumn sunshine on a deck chair in St James Park, central London September 30, 2014. REUTERS/Andrew …

How Did Long-Necked Dinosaurs Drink Without Getting Dizzy?

Extremely tall animals such as the giraffe may offer clues.<p>Many of us have gotten dizzy when we stand up too fast—and we don't even have to go that far. Imagine if you had to lower and raise your head several stories every time you wanted a drink of water.<p>Our Weird Animal Question of the Week comes …

Sea Snail’s Teeth Just Dethroned Spider Silk As The Strongest Biological Material

Introducing the limpet as the heavyweight champion of the animal kingdom<p>The strongest biologic material in the world rivals the strength it takes to turn carbon into diamonds. It doesn’t come from one of the biggest creatures, but rather the tiny teeth of a sea snail.<p>Until now, spider silk has …

Rare Earth Metal Balls Found Beneath The Atlantic Ocean

The ancient deposit could be good news for tech companies<p>Scientists looking for deep sea organisms on a research cruise last month got a surprise when, instead of deep sea life, they pulled up metal balls the size of softballs. The German researchers stumbled inadvertently onto the discovery of the …

What Do Animals See in the Mirror?

Asian elephants, magpies, and great apes are among the species that can self-recognize.<p>Reflect on this: What do animals see when they look into a mirror?<p>Our Weird Animal Question of the Week came to us from @iscavenger, who tweeted us after reading our January column "Why Do Dogs Watch—and React …

How A Tiny Bat Might Interrupt A Massive Oil Pipeline

A bat that may soon be added to the Endangered Species List could interrupt plans for a new oil pipeline in the Midwest. The proposed Sandpiper oil pipeline, intended to carry crude oil from South Dakota to Wisconsin, is nowhere near as big or controversial as Keystone XL. But it’s another flash …

What Happens To Your Body When You're Stressed

When your car dies or a deadline looms, it triggers a chain reaction<p>Life is full of stressful situations. Whether you’ve stepped in front of a speeding bicycle or are bombing a job interview, here’s the chain reaction that’s triggered.<p><b>1. Alarm Signal</b><p>When you hear, see, or otherwise perceive a …

In a Curious Case for Astronomers, a Brown Dwarf Goes Missing

Scientists trained one of the world's largest telescopes on the star and found nothing.<p>Astronomers are trying to crack a strange new case: the mystery of the missing dwarf star.<p>Using one of the biggest telescopes in the world, the ESO's Very Large Telescope in Chile, researchers were on the hunt …

Star Buzzed Earth During Neanderthal Times

Close encounters can hurl a cosmic hailstorm of comets, some of which might collide with Earth.<p>Seventy thousand years ago, when modern humans were on the verge of migrating from Africa and before Neanderthals died out, an alien star flew through the outer reaches of the solar system.<p>Passing less …

Astronomy

Walmart Makes Big Fat Online Mistake and Then It Gets Worse

Reacting quickly to a large, offensive online mistake is important. Double-checking your solution is even more so.<p>Big online marketing mistakes seem all the rage these days. In late August, Spanish clothing and accessories retailer Zara got into hot water over what appeared to be a yellow Jewish …

Costumes

The Big Future: What is the future of food?

What will we eat in the year 2100? In this week's <i>Big Future</i>, Arielle Duhaime-Ross takes a look at what we might eat in the future, and how we'll produce it. It's a tricky question, as new techniques and a changing climate combine to radically transform conventional agriculture. The result might …

Monstrous science: how the Yeti gets research funded

The 1960-61 Silver Hut expedition was an extraordinarily ambitious physiology research programme, which provided significant insights into human adaptation to altitude, and kick-started the careers of some of the 20th century’s leading physiologists. It was also expensive, and part of the funding …

Virus Sleuths Chip Away At Ebola Mysteries

Vincent Racaniello, who studies viruses at Columbia University, says Ebola has recently become his obsession.<p>"I find myself reading incessantly about Ebola when I should be doing other things," says Racaniello, host of the online show This Week in Virology, which has devoted several recent programs …

Pumpkin geometry: stunning shadow sculptures that illuminate an ancient mathematical technique

Photograph: Saul Schleimer<p>The red line shows a straight line from the North Pole through New York and on to the flat map of the world, analogous to the path of light from a source at N. Illustration: Henry …

Watch out for an invasion of 'ZomBees' this Halloween

Picture this: An alien creature lays its eggs inside your body. You begin to feel terrible pain — so much pain that you can’t function or think. You writhe on the floor in agony. Finally — mercifully — you pass out. And you never wake up. It’s all over.<p>Sounds like a scene from a horror movie, …

Tiny human stomachs have been created from stem cells

They look 'more like a mini-organ than anything else that’s ever come before'<p>Three-dimensional "mini-stomachs" have been created from human stem cells. The tiny organs measure about 3 millimeters in diameter and can be used as models for the infections that are often precursors to peptic ulcers and …

Big City, Big Surprise: New York City's Newest Species Is a Frog

The amphibian stayed hidden in plain sight for decades, only to be discovered on Staten Island.<p>Even in one of the most densely populated places on Earth, nature is still capable of some big surprises. Biologists have described a new species of leopard frog discovered in New York City.<p>Only the …

Asteroid in a Bag? Bag it, Says MIT Space Scientist

MIT planetary scientist Richard Binzel calls himself an “asteroid guy.” He’s been studying the rocky planetoids for decades now, so you might think …

Space Exploration

Killer Fungus Threatens Salamanders

Colorful creatures around the world face death.<p>Legend says that salamanders can spit poison and extinguish flames, but even such pyrotechnic powers would not be enough to save them from a new scourge.<p>A fungus that arrived recently in Europe from East Asia is lethal to many salamander species, a …

Scientists Find Differences In The Brains Of People With Chronic Fatigue Syndrome

<i>By Nathan Collins</i><p>Chronic fatigue syndrome affects as many as four in a thousand people in the United States -- perhaps more. Despite that, there's been slow progress in understanding the disease, and researchers still aren't exactly sure what causes it. Now, a small new study hints that subtle …

Mystery of Earth's Water Origin Solved

Instead of arriving later by comet impact, Earth's waters have likely existed since our planet's birth.<p>The water that makes Earth a majestic blue marble was here from the time of our planet's birth, according to a new study of ancient meteorites, scientists reported Thursday.<p>Where do the oceans …

New Tarantula (Not Beetle) Named After John Lennon

Scientists discovered Bumba lennoni living in the Brazilian Amazon.<p>Imagine a world where a spider is named after John Lennon—because now there is.<p><i>Bumba lennoni</i> is a new species of tarantula that lives in the Amazonian state of Pará, Brazil (map), according to a study published October 20 in the …

Dates of lunar and solar eclipses in 2017

Dates of all solar and lunar eclipses this year, plus a preview of the great American total solar eclipse of 2017.<p>The next eclipse comes on the night …

A hummingbird and an adoptive human parent

João Silvestrini is a retiree who lives alone in Barretos, Brasil. Seeking to expand his circle of friends, Silvestrini recently joined Facebook. Although he lacks human companions, he clearly has a close relationship with the local hummingbirds. In this video he invites a wild swallow-tailed …