The Mighty Ant

Leafcutter Ants. Image credit: Mark Moffett / Minden Pictures

Check out these intriguing facts about ants from the Science Channel:

“Ants [each 10-01 ] move an estimated 50 tons [99,790 or 10+04 pounds] of soil per year in one square mile!”

“Ant queens only need to have sex once in their entire lifespan.  The sperm received stays in them for as long as ten years [10+01] and they can use it to lay millions [10+06] of eggs.”

“Although ants normally eat a bland, repetitive diet, they will go to great lengths to obtain special foods they crave. This not only includes raiding your pantry for sugary snacks, but also ‘milking’ insects that secrete tasty fluids the ants enjoy (like aphids, beetles, even some caterpillars).”

Some ants “will bite and then squirt formic acid into the wound. Some can spray formic acid into the air (6″ – 24″) making it hard for you to breathe. Some have stingers on the tips of their abdomens like bees or wasps, and the attack of particularly venomous ants (like Australia’s Bulldog ant) can cause anaphylactic shock.”

Ants can “carry loads up to fifty times their own weight. They will frequently pick up another ant from their colony and give them a ride in their mandibles; an ant is an easy burden compared to some of the large caterpillars and other dead insects they have to bring home.”

“Ferocity Ants are famous for being dogged fighters who will keep on battling even as they are literally being torn limb from limb. It’s not uncommon to see an ant emerge from combat with the decapitated heads of enemy ants attached to her, jaws locked in a death grip. But this anecdote, from no less an historical figure than the German philosopher Arthur Schopenhauer, tops them all. According to him, if you cut a living Bulldog ant in half, the two sections (one armed with mandibles, the other with a stinger) will fight against each other!”

Ants “are very important in keeping down the populations of other more destructive insects like termites, crop eating caterpillars and beetles, etc. Throughout the world, ants have been collected and encouraged to live in and protect orchards.  A single colony of Wood ants will destroy 50,000 – 100,000 [10+04 - 10+05] insects every day, so they have a large impact on the forests where they live.”

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The Super Ball

In 1965, Charles Eames said, “Among the great and elegant design exceptions is a toy produced this year that has swept the country.  What is it? A small bouncing ball—the Super Ball.”

Chemical engineer Norm Stingley created the Super Ball from a material called Zectron, a synthetic rubber polymer polybutadiene that includes hydrated silica, zinc oxide and stearic acid.  According to Wham-O, the manufacturer of the Bouncy Ball, Zectron was “originally intended to cap off gushing oil wells.”

Stingley found a far more playful use for the material.  He vulcanized Zectron with sulfur at 165 degrees Celsius and at a pressure of 80 atmospheres (10+01).  That’s 1,175 pounds per square inch (10+03) or 8,101,339 pascals (10+06).  The result?  A toy with six times the bounce of other rubber balls.  Within a year of its introduction, Wham-O had sold 6 million Super Balls.  In 2007, the product was inducted into the National Toy Hall of Fame.

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The Smaller the Spider the Larger its Brain

Nephila clavipes, a big tropical spider (10-to-00), has plenty of brain space. Image credit: Pamela Belding

New research indicates that the smaller the spider, the larger its brain.  William Eberhard, a biologist at the Smithsonian Tropical Research Institute in Costa Rica, recently studied nine species of spiders in which the largest weighed 400,000 times (10+05) as much as the smallest.  He found that in the tiniest spiders, “…the central nervous systems filled nearly 80 percent of the body cavity, including 25 percent of the legs.”

To learn more, visit The New York Times by clicking here.

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India’s Push for Solar Power

Wiping down solar panels at the Azure Solar Plant in Khadoda, India. Image: Kuni Takahashi for The New York Times

India has ambitious plans to reduce its dependency on coal-fired power plants by integrating solar power into its energy portfolio.  Azure Power is providing clean, solar-generated electricity to a state-government electric utility.  The city of Khadoda, for example, has blanketed 63-acres of land with 36,000 (10+04) solar panels, each of which must be dusted by hand on a weekly basis due to India’s dusty air.

“Two years ago, Indian policy makers said that by the year 2020 they would drastically increase the nation’s use of solar power from virtually nothing to 20,000 megawatts [10+04 megawatts or 10+10 watts]—enough electricity to power the equivalent of up to 15 million [10+07] modern American homes during daylight hours when the panels are at their most productive. Many analysts said it could not be done. But, now the doubters are taking back their words.”

Inderpreet Wadhwa, Azure’s chief executive, expects that the efficiency of solar technology will increase while its cost will decrease; this will ultimately allow India to modernize the country’s approach to energy for the long haul.

To learn more, read the full article in The New York Times by clicking here.

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HAPPY NEW YEAR!

Happy New Year - www_powersof10_com

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Parasitic DNA & the Evolution of Human Pregnancy

My parents feeling my sister's baby kick, 2008

According to a recent article in Slate, researchers believe the evolution of human pregnancy may be linked to a parasitic DNA (10-07) that infected our ancestors by replicating itself throughout their genomes 100 million years ago (10+08).

Scientists studied the uterine cells of three contemporary mammals, specifically opossums, armadillos and humans. Their goal was “… to explain how our ancestors developed a more advanced kind of gestation—including the ability to carry fetuses in the womb until they reached a more developed state.”

“Using a sequencing approach that allowed for large-scale analysis, they considered the genes that were turned on in each of these animals during pregnancy. Then they homed in on differences between the marsupial opossum and the placental mammals, the armadillo and the human. Remarkably, they found that new stretches of DNA, called transposons, were scattered throughout the armadillo and human cells. These transposons appeared to act as light switches for genes that got turned on only in the uteruses of the more advanced animals.”

To learn more about the findings from this study, read the full article in Slate, or visit the journal Nature Genetics, where the study was published.

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Sun Joules

"Let the Sunshine In II," Kari Liimatainen, deviantART

15,000,000,000,000,000,000,000 joules (or 1.5×1022 joules) represents the total energy released by the Sun striking the face of the Earth each day.

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Planets Beyond Our Solar System

Exoplanet, Kepler-20e; Image credit: NASA/Ames/JPL-Caltech

Scientists have made an important discovery in their search for life outside of our solar system.  NASA announced yesterday that its Kepler mission discovered two planets, roughly the size of Earth, called Kepler-20e  and Kepler-20f. “They are the smallest exoplanets ever confirmed around a star like our sun.”  Part of a five-planet system called Kepler-20, both planets are in the constellation Lyra, approximately 1,000 light-years (9.4 x 10+18 meters) away.

To read the full NASA report, click here.

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Challenging Leading Social Behavior Theories

Courtesy of Google images

A recent study published by scientists from the University of Oxford challenges well established theories about social behavior, according to an article in The New York Times today.  The findings, published in the journal Nature are based on the research of over 200 primate species whose social organization has already been determined.

“[The] new survey emphasizes the major role of genetics in shaping sociality. Being rooted in genetics, social structure is hard to change, and a species has to operate with whatever social structure it inherits.

If social behavior were mostly shaped by ecology, then related species living in different environments should display a variety of social structures. But the Oxford biologists—Susanne Shultz, Christopher Opie and Quentin Atkinson—found the opposite was true: Primate species tended to have the same social structure as their close relatives, regardless of how and where they live.

The Old World monkeys, for example, a group that includes baboons and macaques, live in many habitats, from savanna to rain forest to alpine regions, and may feed on fruit or leaves or grass. Yet all have very similar social systems, suggesting that their common ancestry—and the inherited genes [10-08 meters] that shape behavior—are a stronger influence than ecology on their social structure.”

To read the full article from The New York Times, click here.

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Snow Crystals

Salt Lake City snow, February 2011

A 2010 article in National Geographic News explores the idea that no two snowflakes are alike.  There are “10,000,000,000,000,000,000 [or 10+19] water molecules in a typical snow crystal,” and each one forms when a supercooled cloud droplet (roughly 10-05 meters in diameter) freezes.  While it’s true that each snow crystal sparkles in its own unique way, Jon Nelson, a research scientist at Ritsumeikan University in Kyoto, Japan, explains that in early stages of formation, snow crystals are little more than six-sided prisms—all of which look very similar to one another.

Nelson adds, however, that “…just because two underdeveloped snowflakes may look alike…don’t expect to find them.  If you had a million snow crystals photographed for comparison and could compare two of them every second, ‘you’d be there for nearly a hundred thousand [10+05] years or so ,’ he said. ‘It’s a safe bet they won’t be discovered.’”

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