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Swimming with Sharks and Stingrays - Swimming with Sharks and Stingrays
Swimming with Sharks and Stingrays
Every day, boats full of tourists arrive at Shark Ray Alley, where tour guides feed chunks of fish guts to the animals. Read More
Rodent Rubbish as an Ice-Age Thermometer
If you want to know the temperature outside, you look at a thermometer. If you want to know what temperatures were like thousands of years ago, you have to be more creative. In the area around the Grand Canyon, two researchers from Arizona have been piec Read More
A Dire Shortage of Water
If it were up to me, the weather would be hot and sunny every day. Good thing it's not up to me. Earth needs rain and snow. Without a reliable supply of water, we would have nothing to drink, nothing to sustain our crops. Swimming pools would be empty. Read More
Slip Slidin' Away—Under the Sea
An avalanche can send thousands of tons of rock and mud tumbling down a mountainside, wrecking everything in its way: trees, roads, bridges, buildings, and more. Eventually, the motion stops and the dust settles. It can take much longer for debris to set Read More
Bull Sharks
Bull sharks are common in warm, shallow waters along coasts throughout the world. They are known for their particularly unpredictable behavior, as they often travel up rivers and can pose a large threat to those who venture in to the water there. Read More
Snails
The name snail applies to most members of the molluscan class Gastropoda that have coiled shells .These snails are of herbivorous nature. Snails move like earthworms by alternating body contractions with stretching. Read More
Cousin Earth
As their search continues, astronomers are finding more and more planets orbiting nearby stars. This time, they've detected a solid planet that's just 15 light-years from Earth. Read More
Spotty Survival
Northern spotted owls live in the western parts of northern California, Oregon, Washington, and British Columbia. They roost in stands of trees that are hundreds of years old. Read More
Yaks
The yak (Bos grunniens) is a long-haired humped domestic bovine found in Tibet and throughout the Himalayan region of south central Asia, as well as in Mongolia. In Tibetan, the word yak refers only to the male of the species. Read More
Sponges' secret weapon
Bacteria are tiny, single-celled organisms that can cause disease in humans through infection. Bacteria can live almost anywhere: in soil, water, food or your body. Read More
Toxic Cleanups Get a Microbe Boost
Toxic Cleanups Get a Microbe Boost Garbage can be a huge problem. It not only stinks and takes up space but also can be hazardous to your health. Toxic waste can seep into the soil and pollute the environment. Read More
Salt secrets
When you look at your food, some ingredients are easy to see. For example, there is obviously milk in your cereal, cheese on your pizza and peanut butter on your toast. But your meals are also filled with ingredients you can’t see. And you might be surpr Read More
Sea Giants and Island Pygmies
The natural world is full of extremes. Elephants and whales are huge. Minnows and mice are small. But it's also possible to find pygmy elephants, enormous rodents, and giant squid. Such surprising size variations have sent scientists scrambling to unders Read More
Detecting an Eerie Sea Glow
Out at sea, there are nights when huge patches of the water's surface glow with an eerie white light. Sailors have been telling tales of these "milky seas" for hundreds of years, but only now have scientists finally documented the phenomenon. First, Stev Read More
Childhood's Long History
You're lucky. Compared to other animals, you get to be a kid for a long time before you have to strike off on your own. Recent studies suggest that people have been enjoying long childhoods for many thousands of years. Read More
Cobras
Cobras are venomous snakes of family Elapidae, of several genera. (Elapidae also include the taipans, brown snakes, tiger snakes, fierce snakes, coral snakes, mambas, and sea snakes.) Cobras generally inhabit tropical and desert regions of Asia. Read More
Nature's Medicines
You would probably never think to slap a stingray on a scraped knee. Eighteen-year-old Ben Powell, however, has found compounds on a stingray's skin that may help fight infections. Read More
Nanosponges Soak Up Pollutants
What could be worse than toxic sludge seeping into soil, poisoning animals and people? The headache of cleaning up all that muck. For years, engineers have struggled to get oil and tar out of the ground at hazardous-waste sites around the U. S. Read More
Helping the Cause of Macaws
Deep in the steamy Peruvian jungle, a macaw spreads her brilliant scarlet feathers over her three squirming chicks. She pokes her great beak out the door of the wooden box where she has made her nest and waits for her mate to return with food. Fifty feet Read More
Professor Ant
If you haven't appreciated your teachers lately, now might be a good time to reflect on all that they do for you. Good teachers already know the information that they're teaching, but they slow down to explain it to you. With their help, you learn far fa Read More
Play for Science
Daniel Kunkle spent most of his time in graduate school playing with a colorful puzzle called a Rubik's Cube. And for 20 years, Jonathan Schaeffer worked on winning at checkers. The two researchers weren't goofing off. With clever computer programming, K Read More
Sun Flips Out to Flip-Flop
The sun is a strange and turbulent place. The scorching hot ball of gas may look smooth from a safe distance, but dark spots, violent explosions, and massive eruptions constantly come and go on its surface. Read More
Tool Use Comes Naturally to Crows
You probably use tools all day long without even thinking about it. You pick up a pencil to write. You deliver food to your mouth with a fork or spoon. You use keys to open doors. And you probably learned most of these skills when you were little. Crows, Read More
Bald Eagles Forever
Trouble for bald eagles and other birds began when farmers began to use a chemical called DDT, which protected crops from insects but also killed birds and made the shells of their eggs dangerously thin. Read More
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The Color of Health
Nature is full of color, from rainbows and roses to butterfly wings and peacock tails. Even the fruits and vegetables you eat often have distinctive colors: intensely blue blueberries, deeply red stra... Read More
A Wild Ferret Rise
Black-footed ferrets used to be in big trouble. The furry long-necked creatures look like a cross between a raccoon and a weasel, and they are North America's only native ferret species. By the late 1... Read More
The Oily Gulf
On the night of April 20, an explosion rocked the Deepwater Horizon. The Deepwater Horizon was a huge building or platform in the middle of the Gulf of Mexico used to drill oil from deep below the oce... Read More
A Grim Future for Some Killer Whales
In 1989, an oil tanker called the Exxon Valdez struck an underwater reef in Prince William Sound, a large body of water in southern Alaska. The ship dumped about 11 million gallons of crude oil into t... Read More
Robins
The American Robin (Turdus migratorius) is a migratory songbird of the thrush family. The American Robin is 25-28 cm (10-11 in) long. It has gray upperparts and head, and orange underparts, usually br... Read More
Choosing a Preschool: What to Consider By Danielle Wood
While most schools offer some amount of circle time and fingerpaint, they are not all the same. Here's how to sort through the preschool mumbo jumbo, and pick the right place for your child. ... Read More
Planet Hunters Nab Three More
There are other planets around other stars in other solar systems. That's the old news. Now, new observations have turned up the three smallest, most Earthlike planets ever found outside our solar sys... Read More
The Earth-bound asteroid scientists saw coming
On October 7, 2008, an asteroid the size of a car blazed through the atmosphere and crashed into the Nubian Desert in the African nation of Sudan. Eyewitnesses who were looking up at the sky at the ti... Read More
Message in a dinosaur's teeth
Spinosaurs were large, meat-eating dinosaurs whose fossilized remains are often found in the same areas as the bones of tyrannosaurs (such as Tyrannosaurus rex). Fans of the movie Jurassic Park III ma... Read More
A Satellite of Your Own
A rocket soars into space. It releases a satellite, which goes into orbit around Earth. The satellite begins collecting data and sending signals.... Read More
Salty, Old and, Perhaps, a Sign of Early Life
It's hard to believe today, but millions of years ago the dusty New Mexico desert was covered by a shimmering ocean. That ocean water evaporated long ago. But it left behind huge deposits of salt. Som... Read More
A Long Trek to Asia
Today, a plane trip from eastern Africa to China takes less than a day. Tens of thousands of years ago, it would have taken a lot longer to walk those 5,000 miles. ... Read More
Ferrets
In general use, a ferret is a domestic ferret (Mustela putorius furo), a creature first bred from the wild European polecat at least 2,500 years ago. Contrary to popular belief, ferrets are not rodent... Read More
Golden Retrievers
The Golden Retriever is a relatively modern and very popular breed of dog. It was developed as a retrieving dog to use while hunting wild fowl. Today it is one of the most common of family dogs since ... Read More
The hottest soup in New York
This winter has been a season of breaking records. Last month, athletes at the winter Olympic games in Vancouver broke sports records. A few weeks before that, record-breaking amounts of snow fell on ... Read More