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Showing stories 126-150 out of 573 stories.
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15-Mar-2012
Timing is key to fern's spore-throwing catapult
If you've ever been hiking, chances are you've seen fern plants in the woods. Nestled under fern leaves are tiny capsules chock-full of spores, tiny life vessels which, like seeds, are used for dispersal. Fern plants launch their spores with tiny catapults. Once in the air, wind and air currents can take the spores around the world.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

8-Mar-2012
What can honeybees tell us about human behavior?
A new study of honeybees might help researchers understand why some people break free of their normal routines and seek out new experiences. Zhengzheng Liang and colleagues took a close look at the genes that are expressed in the brains of honeybees when the bees are out searching for new food sources.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

1-Mar-2012
Unlike chimps, young kids share knowledge
Young children trying to solve a puzzle collaborated and shared information, while chimps and capuchin monkeys working on the same puzzle did not, according to a new study. These findings help explain why human culture gets more complex over generations, while that of other animals seems to stay roughly the same. Other animals are capable of learning from each other, so researchers would like to know what special human abilities allow us to have "cumulative culture."

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

23-Feb-2012
Small horses liked it hot
The earliest horses were closer in size to a housecat than to the modern-day animals we're familiar with. Even at this small scale, the body size of these ancient horses evolved over time. New research shows that environmental temperatures drove these changes.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

16-Feb-2012
Good vibrations and the science of touch
Did you know that your fingertips and palms are especially good at feeling vibrations? You can check this out by putting your hands on an object that's giving a gentle hum, like a washing machine. Then try your forearm, and compare what you feel.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

9-Feb-2012
Shedding more light on major quakes
Using a technique known as Light Detection and Ranging, or LIDAR, before and after large earthquakes might help researchers pinpoint the places where those quakes break the ground wide open, according to a new study.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

2-Feb-2012
Off Western Australia, temperature rules the reefs
Australia's Great Barrier Reef has been in decline for years. Its crumbling conditions have caused many researchers to predict that higher levels of carbon dioxide in the world's oceans would only harm the coral further. But, new research is suggesting that a more acidic ocean -- due to increased carbon dioxide levels -- would not actually affect coral reefs as much as the sea's temperature.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

26-Jan-2012
Before they pounce, jumping spiders see green
Jumping spiders have an unusual depth-perception system in their eyes, which helps them pounce on their prey, a Japanese research team has discovered.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

19-Jan-2012
Bird attraction based on illusion
Bowerbirds, which live in Australia and New Guinea, have an elaborate mating ritual in which the males build large structures or "bowers" that females stop by to inspect. In a new study, scientists report that certain male bowerbirds attract mates by decorating their bowers in a way that creates an optical illusion.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

12-Jan-2012
A wind-riding bird gets a boost
The wandering albatross spends most of its life in flight, touching down on land to find food or to breed. These enormous seabirds, which have the largest wingspan of any living bird, conserve energy while aloft by riding the wind currents.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

5-Jan-2012
Origins of huge-headed 'supersoldier' ants
Most ant species in the Pheidole genus have two social groups, or castes: workers and solders. Some also produce "supersoldiers." These large ants block their nest entrance with their extra-large heads and fight with invading ants during army ant raids. Although there are 1,100 different species of Pheidole ants worldwide, just a few of them produce supersoldiers.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

22-Dec-2011
One-third for the birds!
As the numbers of big fish like tuna decline, humans are increasingly catching anchovies, sardines and other small "forage fish" instead. But if humans take too many, they could be cutting off the food supply for the animals that prey on forage fish.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

15-Dec-2011
Naked mole-rats feel no pain from acid
The African naked mole-rat is, to our eyes, a pretty ugly creature. These small animals have no hair, wrinkly skin, and two long, yellow front teeth. They live in huge colonies inside deep underground tunnels, where there is little fresh air.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

8-Dec-2011
Honor among rats
In an unusual example of empathy in animals other than primates, new research shows that rats will liberate their distressed cagemates from a trap, even when they get no additional reward. These animals seem to be showing empathy, which has often been considered unique to primates. An empathetic animal can "put itself in another's shoes" while maintaining its own perspective and emotional separation.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

1-Dec-2011
There's something about a face
It's easy for people to tell one human face from another. We do it all the time without even thinking about it. But, it does take a special ability. Imagine trying to distinguish one goldfish face from another, or one squirrel face, or one wasp face. Within each of these species, all the faces look pretty much the same, right? In contrast, there's something about the human face that our brains recognize and remember in fine detail.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

24-Nov-2011
The world's first fish hooks?
Researchers in East Timor, a country in Southeast Asia, have discovered the remains of large fish and fishing gear in a shelter that was used by early humans long ago. The remains include some fish hooks made out of bone and they appear to be 42,000 years old, which suggests that early humans were fishing in the open ocean much earlier than researchers had thought.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

17-Nov-2011
For decision-making, less information may be more
A study on European starlings shows that when it comes to making decisions, it can help to have less information about the available choices -- but not always. Whether this "less-is-more" effect comes into play depends heavily on a species' ecological situation, the researchers report.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

10-Nov-2011
Stars may not be massive or metallic
Before stars existed in space, the only elements present in the universe were hydrogen, helium and lithium. The birth of the first stars fundamentally transformed the early universe by emitting the first light and producing the first metals. Astronomers are still trying to unlock some of the secrets of early star formation. Two new studies in the journal Science show that these early stars weren't as big or metallic as previously thought.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

3-Nov-2011
Bird brains primed for cooperation
Best friends sometimes finish each others' sentences, but the plain-tailed wrens of the Andes take things even further. Male and female wrens sing intimate duets in which they alternate syllables so quickly it sounds like a single bird is singing.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

27-Oct-2011
The big hearts of pythons
Pythons can go a full year without food, and once they do score a meal, their heart nearly doubles in size. Since the snake's heart-ballooning after a meal is similar to the heart growth seen in people who exercise a lot, like Olympic athletes, studying snake hearts could help scientists figure out how to make human hearts healthier.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

20-Oct-2011
Evidence from a prehistoric mastodon hunt
A controversial mastodon rib, found with the tip of a bone point lodged inside, is 13,800 years old, researchers report in a new study.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

13-Oct-2011
The world's first art studio?
One of the earliest forms of paint is known as ochre -- and it really wasn't much more than colorful dirt. But, researchers believe that early humans may have used this colorful ochre to decorate their bodies or to make simple pieces of artwork.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

6-Oct-2011
If you love something, close it up? The weird world of caves
How would you feel if someone told you they'd discovered someplace amazing, but if they let other people come visit, it would be ruined? Would you wonder, what's the point of protecting it, if nobody can enjoy it? Or, could you appreciate the place without having to actually see it in person?

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

29-Sep-2011
Superfast muscles found in bats
As bats swoop in on their prey, their sonar-based calls -- used to locate and track their meals -- increase to an incredible speed of about 160 calls per second. This kind of super-fast sonar call is known as the "terminal buzz," and it is often the last thing an insect ever hears.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

22-Sep-2011
Cattle versus wildlife: The battle for food has benefits
In Africa, the widespread belief among small subsistence farmers and commercial ranchers alike is that nearby wildlife compete with livestock for food. The solution for most farmers is to kill off wildlife. These eradication efforts are troublesome to scientists and others concerned about biodiversity conservation.

Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science

Showing stories 126-150 out of 573 stories.
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Funding provided by the William T. Golden Endowment Fund for Program Innovation at AAAS.