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Algae Motors - Algae Motors
Algae Motors
Dogs fetch. Pigeons deliver messages. Yaks and oxen haul heavy loads. Now, scientists at Harvard University have found that even tiny algae can be used to do work. Read More
Cell Phone Tattlers
Your cell phone holds secrets about you. Besides the names and numbers that you've programmed into it, traces of your DNA linger on the device, according to a new study. Read More
Bulldogs
The Bulldog (often called the English Bulldog or British Bulldog) is a medium-sized dog breed that originated in England. The Bulldog is a relatively small but stocky breed, with a compact body and short, sturdy limbs. Read More
Insects
The largest and most diverse animals on earth, insects encompass over 925,000 different species. They range in size from less than a millimeter to over 18 centimeters, and come in an endless variety of shapes and colors. Read More
Sugar-pill medicine
Feeling sick? You wouldn’t want to take fake medicine for an earache or major illness. But in some cases, the fake stuff can help. Studies have long shown that fake medicines, or placebos, can produce the same healing effect as an active drug. This pheno Read More
Thieves of a Feather
Some birds are masters of crime. These sneaky species steal food from other birds—and get away with it. A diverse collection of birds is guilty of such thievery, and scientists have long wondered what these families of birds have in common. A new study s Read More
Black Widow spiders
The black widow spider is a spider notorious for its neurotoxic venom. It is a large widow spider found throughout the world and commonly associated with urban habitats or agricultural areas. Read More
Switchable Lenses Improve Vision
Some people have the impression that wearing eyeglasses can make you look smarter. Someday, your glasses themselves might actually be smarter. Read More
Black Hole Journey
There are all sorts of holes: big ones and little ones, deep ones and shallow ones. There are swimming holes and buttonholes, cheese holes and bullet holes. Then, there are black holes. Read More
Awake at Night
The less sleep I get, the unhappier I become. When I'm really tired, I have trouble concentrating. I can't get any work done. I get cranky and irritable, and everything starts to annoy me. I know lots of people just like me, but I also have friends who c Read More
Squirrels
In everyday speech in the English-speaking world it usually refers to members of the genera Sciurus and Tamiasciurus. These typical members of the family are tree squirrels with large bushy tails, and are indigenous to Europe, Asia and the Americas. Read More
Ancient Art on the Rocks
Whenever you sketch pictures in the dirt or draw stick figures on a chalkboard, you join a long line of artists from throughout human history. For thousands of years, people have been leaving their marks on rock walls and in caves around the world. Read More
Gila Monsters
The Gila monster (Heloderma suspectum) is a species of lizard that was once thought to be one of only two species of venomous lizards. It is a heavy, slow moving lizard, up to 60 cm (2 feet) long. Read More
Are Propellers Fin-ished?
If you've ever been to an aquarium or a zoo, you've probably admired the feisty penguins. They can squiggle through water faster than 10 miles per hour, turn on a dime, and leap onto shore, all in one smooth movement. Read More
Marsupials
Marsupials are identified by one very important characteristic: they carry and nurse their young in a pouch. Marsupial babies are born blind and helpless, with no hair and with small forearms that are barely developed. Read More
Fossil Forests
Fossil trees have a story to tell. Earth has been around for about 4.5 billion years. The first traces of life appeared roughly 3.7 billion years ago. Land plants finally emerged more than 3 billion years later. Our immediate human ancestors showed up ju Read More
Prime Time for Cicadas
If it hasn't happened yet, it could occur any day now. The first signs are little holes in the ground in yards, orchards, and fields. Then, one warm evening, big, red-eyed bugs start crawling out of the holes. Read More
What the appendix is good for
It was a Saturday morning in 1991 when 12-year old Heather Smith woke up feeling nauseous. Spring break was just beginning, and her parents were planning to take her skiing the next day in Flagstaff, Ariz. — two hours from their home in Tempe. Read More
Electric Catfish
Electric catfish (family Malapteruridae) is the common name of several species of freshwater catfish with the ability to produce an electric shock of up to 350 volts using electroplaques of an electric organ. Read More
Pekingese
Pekingese or Pekinese is an ancient breed of toy dog, originating in China. They were the favoured imperial pet. Good-natured and happy, these dogs enjoy family environments, but require regular cleaning if in outdoor environments. Read More
Walking to Exercise the Brain
Do you think sitting and studying all the time will improve your grades? Think again. Getting some exercise may help, too. New research with older people suggests that taking regular walks helps them pay attention better than if they didn't exercise. Read More
Cocker Spaniels
The English Cocker Spaniel is a breed of gun dog. It is one of several varieties of spaniel and somewhat resembles its American cousin, the American Cocker Spaniel. Read More
Lovebirds
A lovebird (genus Agapornis, Greek for "lovebird") is a very social and affectionate parrot. The name "lovebird" stems from these birds' affectionate natures. Many lovebirds are green, although color mutations can feature many different colors. Read More
Eating Up Foul Sewage Smells
The smell of rotten eggs that wafts out of wastewater drains and treatment plants is an unwelcome visitor anywhere. In order to meet required standards of air quality, sewage-treatment plants use toxic and expensive chemicals to fight the stench. Read More
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Problems with Prepositions
You may end a sentence with a preposition. Just do not use extra prepositions when the meaning is clear without them. Correct: That is something I cannot agree with. That is something with which I ca... Read More
Longer lives for wild elephants
Most people think of zoos as safe havens for animals, where struggles such as difficulty finding food and avoiding predators don’t exist. Without such problems, animals in zoos should live to a ripe o... Read More
Carnivorous Birds
The ducks paddling around and scooping up breadcrumbs are harmless enough, but not all birds are so docile. Carnivorous birds -- often called raptors -- make up a large portion of all bird species. ... Read More
Melting Snow on Mars
The search for life on Mars often starts with a search for water. That's because life as we know it can't exist without the wet stuff. ... Read More
Beagles
A Beagle is a medium-sized dog breed and a member of the hound group, similar in appearance to a Foxhound but smaller with shorter legs, and longer, softer ears. Beagles are scent hounds and were used... Read More
Birds We Eat
Birds have always been an important food source for man. In addition to domestic species that provide us with eggs, there are still other species that are hunted in the wild for sport and for food. So... Read More
Monkeys Count
Monkey see, monkey hear, monkey count. Rhesus monkeys can match the number of faces they see to the number of voices they hear, a new study shows. This finding suggests that monkeys can keep track of... Read More
Science loses out when ice caps melt
t’s hard to imagine a mountain range without snow-covered peaks. But that may soon be the case in countries in or near the tropics. Studies show that the ice that sits atop the world’s highest mountai... Read More
Prairie Dogs By Prairie Dogs
Prairie dogs are small, stout-bodied, burrowing rodents with shallow cheek pouches native to the grasslands of North America. The name "prairie dog" came from their bark-like call, not from ... Read More
Eagles
Like all birds of prey, eagles have very large powerful hooked beaks for tearing flesh from their prey, strong legs and powerful talons. They also have extremely keen eyesight to enable them to spot p... Read More
Emus
The Emu (Dromaius novaehollandiae) is the largest bird native to Australia, and the only extant member of the genus Dromaius. The Emu is the second-largest flightless bird in the world, after its rati... Read More
Minks
A mink is any of several furry, dark-colored, semi-aquatic, carnivorous mammals of the family Mustelidae, which also includes the weasels and the otters. The American Mink can be found in wooded areas... Read More
A Giant Flower's New Family
You may know someone who's taller, shorter, blonder, or more artistic than all of his or her relatives. The phenomenon can make you wonder at the strange ways in which family trees sometimes work. ... Read More
Island of Hope
A pod of dolphins play in the bay as we hop off a small motorboat into knee-deep water. Back home, it is Thanksgiving, cold and gray, but here in Fiji, the air is windless and steamy. This country of ... Read More
Losing with Heads or Tails
Heads, you win. Tails, you lose. It turns out that coin tosses may be less fair than you might think. A new mathematical analysis even suggests a way to increase your chances of winning. ... Read More