In the story of how the dog came in from the cold and onto our sofas, we tend to give ourselves a little too much credit. The most common assumption is that some hunter-gatherer with a soft spot for cuteness found some wolf puppies and adopted them. Over time, these tamed wolves would have shown their prowess at hunting, so humans kept them around the campfire until they evolved into dogs....
Showing posts with label Health. Show all posts
Showing posts with label Health. Show all posts
Mar
01
Black Hole Spins at Nearly the Speed of Light
Label: Health A superfast black hole nearly 60 million light-years away appears to be pushing the ultimate speed limit of the universe, a new study says.For the first time, astronomers have managed to measure the rate of spin of a supermassive black hole—and it's been clocked at 84 percent of the speed of light, or the maximum allowed by the law of physics."The most exciting part of this finding is...
Feb
28
Scarred Duckbill Dinosaur Escaped T. Rex Attack
Label: Health A scar on the face of a duckbill dinosaur received after a close encounter with a Tyrannosaurus rex is the first clear case of a healed dinosaur wound, scientists say.The finding, detailed in the current issue of the journal Cretaceous Research, also reveals that the healing properties of dinosaur skin were likely very similar to that of modern reptiles.The lucky dinosaur was an adult...
Feb
27
Why African Rhinos Are Facing a Crisis
Label: Health The body count for African rhinos killed for their horns is approaching crisis proportions, according to the latest figures released by the International Union for Conservation of Nature (IUCN). To National Geographic reporter Peter Gwin, the dire numbers—a rhinoceros slain every 11 minutes since the beginning of 2013—don't come as a surprise. "The killing will continue as long as...
Feb
26
A History of Balloon Crashes
Label: Health A hot-air balloon exploded in Egypt yesterday as it carried 19 people over ancient ruins near Luxor. The cause is believed to be a torn gas hose. In Egypt as in many other countries, balloon rides are a popular way to sightsee. (Read about unmanned flight in National Geographic magazine.)The sport of hot-air ballooning dates to 1783, when a French balloon took to the skies with a sheep,...
Feb
25
Sharks Warn Off Predators By Wielding Light Sabers
Label: Health Diminutive deep-sea sharks illuminate spines on their backs like light sabers to warn potential predators that they could get a sharp mouthful, a new study suggests.Paradoxically, the sharks seem to produce light both to hide and to be conspicuous—a first in the world of glowing sharks. (See photos of other sea creatures that glow.)"Three years ago we showed that velvet belly lanternsharks...
Feb
24
Picture Archive: Dorothy Lamour and Jiggs, Circa 1938
Label: Health Dorothy Lamour, most famous for her Road to ... series of movies with Bing Crosby and Bob Hope, never won an Oscar. In her 50-plus-year career as an actress, she never even got nominated.Neither did Jiggs the chimpanzee, pictured here with Lamour on the set of Her Jungle Love in a photo published in the 1938 National Geographic story "Monkey Folk."No animal has ever been nominated for...
Feb
23
Elderly Abandoned at World's Largest Religious Festival
Label: Health Every 12 years, the northern Indian city of Allahabad plays host to a vast gathering of Hindu pilgrims called the Maha Kumbh Mela. This year, Allahabad is expected to host an estimated 80 million pilgrims between January and March. (See Kumbh Mela: Pictures From the Hindu Holy Festival)People come to Allahabad to wash away their sins in the sacred River Ganges. For many it's the realization...
Feb
22
Businessman Dennis Tito Financing Manned Mission to Mars
Label: HealthJane J. Lee An announcement this week that a group led by the world's first space "tourist," Dennis Tito, plans to send a manned mission to flyby Mars in 2018 has lit up the Internet.A press advisory from the new group, the Inspiration Mars Foundation, made no mention about whether there would be humans onboard.But reports from NewSpace Journal say that there will be two crew members making...
Feb
21
Turbulence Ahead for Weather Satellites
Label: HealthJane J. Lee Like a celestial version of Pixar's industrious robot Wall-E, environmental-monitoring satellites continually whiz overhead, quietly performing their allotted tasks of taking data and beaming the information down to climate researchers and weather forecasters.But a recent U.S. Government Accountability Office (GAO) report highlights the fact that this monitoring network—which...
Feb
20
The True Story of History's Only Known Meteorite Victim
Label: Health The Russian meteorite, whose sonic boom damaged buildings and injured more than a thousand last week, is not the first to shatter a human life. (See pictures: "Meteorite Hits Russia.")Take the true story of Ann Hodges, the only confirmed person in history to have been hit by a meteorite.On a clear afternoon in Sylacauga, Alabama (see map), in late November 1954, Ann was napping on her...
Feb
19
New Study Analyzes Heavy Metal Dancing
Label: Health Parents may never understand their rock 'n' roll loving children, but scientists might. A study published online in arXiv this week seeks to explain the "mosh pit"—using physics.To most scientists, heavy metal refers to elements on the lower end of the periodic table. But to Jesse Silverberg and Matt Bierbaum, doctoral students at Cornell University's department of Condensed Matter Physics,...
Feb
18
Confirmed: Dogs Sneak Food When People Aren't Looking
Label: Health Many dog owners will swear their pups are up to something when out of view of watchful eyes. Shoes go missing, couches have mysterious teeth marks, and food disappears. They seem to disregard the word "no."Now, a new study suggests dogs might understand people even better than we thought. (Related: "Animal Minds.")The research shows that domestic dogs, when told not to snatch a piece of...
Feb
17
Meet the Meteorite Hunter
Label: Health Michael Farmer is one of the world's only full-time meteorite hunters. Since the 1990s, the 40-year-old Tucson, Arizona, resident has been scouring the world for pieces of interstellar rock, racing to be the first one on the scene and selling his finds to museums and private collectors. On Friday, as Russians reportedly scrambled to collect fragments from a passing meteorite that injured...
Feb
16
Picture Archive: Making Mount Rushmore, 1935-1941
Label: HealthPhotograph from Rapid City Chamber of Commerce/National GeographicThere's no such thing as Presidents' Day.According to United States federal government code, the holiday is named Washington's Birthday, and has been since it went nationwide in 1885.But common practice is more inclusive. The holiday expanded to add in other U.S. presidents in the 1960s, and the moniker Presidents' Day became popular...
Feb
15
Meteorites: Best Places to See Them Up Close
Label: Health The meteorite that touched down in central Russia on Friday sent many people running, hoping to avoid getting hurt. Now, plenty of others will be running in search of valuable meteorite pieces, which can be filled with precious metals.Although it can be cost prohibitive to collect them, museums and other tourist sites offer an inexpensive way to admire space rocks. (Related: Asteroid Impacts:...
Feb
14
Why We Walk … and Run … And Walk Again to Get Where We're Going
Label: Health You have to get to a bus stop to catch the once-an-hour express ... or to a restaurant to meet a friend ... or to a doctor's office. You've got maybe a half a mile to cover and you're worried you'll be late. You run, then you stop and walk, then run some more.But wait. Wouldn't it be better to run the whole way?Not necessarily.A new study by an assistant professor of mechanical engineering...
Feb
13
Are Honeybees Losing Their Way?
Label: Health A single honeybee visits hundreds, sometimes thousands, of flowers a day in search of nectar and pollen. Then it must find its way back to the hive, navigating distances up to five miles (eight kilometers), and perform a "waggle dance" to tell the other bees where the flowers are.A new study shows that long-term exposure to a combination of certain pesticides might impair the bee's ability...
Feb
12
Where Will Pope Benedict XVI Retire?
Label: Health Someone with a suspicious mind and deep knowledge of Vatican trivia might have guessed that something was going on months ago. Last November, a community of cloistered nuns vacated the Mater Ecclesiae monastery, located inside Vatican Gardens, two years before they were expected to do so.The monastery has since been closed for renovation.On Monday, in the press conference that followed...
Feb
11
Kumbh Mela: Pictures From the Hindu Holy Festival
Label: Health Holy BathPhotograph by Roberto Schmidt, AFP/Getty ImagesThe Hindu festival known as Kumbh Mela, often referred to as the world’s largest gathering of humanity, peaked on Sunday at...
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