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Showing stories 26-50 out of 584 stories.
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8-May-2014
Materials that heal themselves
Imagine a material that can repair itself after a bullet passes through it. That's what Scott White and colleagues have designed. Until now, polymer materials, or materials made of large molecules that are, in turn, made up of small, repeating subunits, have only been engineered to repair very small defects. But these researchers have improved the self-healing properties of polymer materials to the point that they can now automatically patch holes in themselves that are 3 centimeters in diameter.

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

1-May-2014
Clever bird mimics multiple species to score meals
Anyone who knows the story of 'The Boy Who Cried Wolf' knows that people eventually stop listening to liars. The same is true in nature: Animals will eventually stop paying attention to others that give false alarms, or those that cry out in warning even when there is no danger. Now, however, a new study in Science shows that one particular African bird is able to trick other species again and again by mimicking the sounds of multiple species.

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

24-Apr-2014
Hidden diversity floating on top of the sea
Individual cells of the tiny ocean bacteria Prochlorococcus -- perhaps the most plentiful photosynthetic creature on Earth -- are more diverse from one cell to the next than previously thought, a new study in the April 25 issue of the journal Science reports.

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

17-Apr-2014
How to discover species (without killing them)
It's no surprise that newly discovered species (or even 'rediscovered' species that researchers had thought were extinct) often come from small, isolated populations. This fact means that these new species are already at risk -- but museums and private collectors can make these species' situation even worse, according to the authors of a Perspective article in this week's issue of Science.

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

10-Apr-2014
How flies escape the swatter
Anyone who's ever swatted at a fly knows how fast the small, winged insects can be. Now, a new study shows how flies are able to make such quick escapes -- and the way they do it is not what researchers had expected.

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

3-Apr-2014
Whales and butterflies: The migration effect
What do a 40-ton whale and near-weightless butterfly have in common? They both migrate every year, along with billions of other animals like ducks, turtles and moths. Now, a new study in the April 4 issue of the journal Science explains how important migration is to shaping ecosystems on Earth.

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

27-Mar-2014
The angular control of light
Scientists trying to control light have made progress, a new study in the March 28 issue of the journal Science reports.

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

20-Mar-2014
Crows and cuckoos: A unique relationship
The great spotted cuckoo is known to be a nuisance. This parasitic bird sneaks its eggs into other birds' nests and tricks the other birds into caring for their young. However, a new study of these cuckoos and of carrion crows shows that the cuckoos aren't all bad: In addition to crowding the crows' nests, they seem to protect the birds from predators.

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

13-Mar-2014
Despite few food options, abundant assortment of species
A close look at tropical flies and the parasitic wasps that lay eggs inside them reveals an incredibly complex web of interactions, including some that would have remained hidden without new and advanced molecular techniques.

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

6-Mar-2014
A model for the world's rivers?
A new model can predict how river networks evolve over time, and it might help researchers understand what some landscapes looked like in the past -- or how they will look in the future. And since rivers act as both pathways and barriers for many creatures, this new model might tell researchers more about the ways that rivers affect natural ecosystems.

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

27-Feb-2014
Black holes give off stronger winds than we thought
Black holes release more energy into the galaxies they live in than previously thought, a new study in the Feb. 28 issue of the journal Science suggests.

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

20-Feb-2014
With a twist, researchers turn fishing line into muscles
What if the clothing you wore responded to temperature, becoming thicker on cold days and thinner on hot days? Or if the window shutters in your house opened and closed automatically to keep the temperature inside just right? That's the kind of technology that Carter Haines and colleagues show off in a new Science report.

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

13-Feb-2014
Crazy ants cover themselves in chemicals
The United States Gulf Coast is being overrun by tawny crazy ants. The invasive ant species arrived from South America in the early 2000s and immediately began replacing colonies of fire ants, which had dominated the region since the 1930s. Now, researchers show that these tawny crazy ants have a unique chemical defense that allows them to best the fire ants in battle.

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

6-Feb-2014
2013 Visualization Challenge winners announced
Art and science have always gone hand-in-hand. So, for the past 11 years, the journal Science and the US National Science Foundation have sponsored the International Science and Engineering Visualization Challenge, which honors 18 groups or individuals who use visual media -- photography, video, illustration, posters, games, etc. -- to promote science.

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

30-Jan-2014
Chemical tricks in new hosts expand pathogen variety
A pathogen that has spent generations living comfortably in one host can leap to and successfully inhabit an entirely different one, and now a new report suggests the chemical changes it makes in the new host allow it to make this jump.

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

23-Jan-2014
Nothing sees color like the mantis shrimp
Most mammals have two types of photoreceptors -- cells that convert light into electrical signals -- in their eyes. Humans and many other primates have three. Some birds and reptiles have four. Certain butterflies can even have six. But a crustacean, known as the mantis shrimp, which lives among colorful coral reefs, has 12 different types of photoreceptors in their eyes -- and researchers haven't understood why until now.

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

16-Jan-2014
No speed limit for soil in New Zealand's mountains
Scientists working in the mountains of New Zealand report very fast rates of soil weathering, a new study in the Jan. 17 issue of the journal Science reports, contradicting previous studies that suggest mountainous soil weathering has a speed limit -- a rate at which it cannot go any faster.

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

9-Jan-2014
The importance of large carnivores
In the classic film, "The Wizard of Oz," Dorothy and her frightened companions begin chanting, "Lions and tigers and bears -- oh my!" And, to be sure, carnivores like those have scared people (and other animals) for centuries. But, in a review article in Science this week, William Ripple and colleagues highlight some of the benefits that these top carnivores bestow on ecosystems around the world -- and they say that the time to conserve these meat-eating species is now.

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

2-Jan-2014
Working up the nerve to mate
A new study in fish reports that a female's more likely to mate with a male she's seen than one she's not because certain nerve cells fire when she sees him again. The finding is reported in the Jan. 3 issue of the journal Science.

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

19-Dec-2013
Where did cooperation come from?
Why do people (and animals) help each other? What's in it for them? It's a fundamental question that scientists have been asking for years -- and a new study in birds is helping to explain how the idea of cooperation first evolved in the animal kingdom.

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

12-Dec-2013
Animal family tree trunk made of jelly
Just which critters sit at the base of the animal family tree has been unclear, but now a new study providing the first-ever genome sequence of an ancient jelly-like creature suggests that it represents the tree's first branch.

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

5-Dec-2013
Deep-sea sampling explains large slip-up off Japan
It was the fault zone's fault that the 2011 Tohoku-Oki earthquake in Japan was so big; the fault zone was too thin and too weak, reports a series of extraordinary ocean drilling studies.

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

28-Nov-2013
Aging happens faster when more females are near
Historically, scientists haven't looked too closely at how a male's health or lifespan changes if he senses the presence of a female, or vice versa. But now a study by University of Michigan's Christi M. Gendron and colleagues published in the Nov. 29 issue of the journal Science does just that.

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

21-Nov-2013
Icy detective discovers extraterrestrial particles
Sensors buried below the ice may help scientists figure out where the high-energy rays that speed through space are born, a new study reports. And this is exciting as the origin of these rays, known as cosmic rays, has long been mysterious -- because cosmic rays are hard to track.

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

14-Nov-2013
Dogs went to finishing school -- in Europe
How were dangerous, man-eating wolves tamed to become the friendly, playful dogs we know and love today?

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

Showing stories 26-50 out of 584 stories.
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Funding provided by the William T. Golden Endowment Fund for Program Innovation at AAAS.