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Showing stories 1-25 out of 577 stories.
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11-Sep-2014
Younger species cope better with changing land
Researchers studying birds in Costa Rica have made an interesting discovery: older species, which have been evolving for a long time, go extinct much quicker than newer species, which haven't had as long to evolve, when forests are converted to farmland. This discovery shows how changing a landscape can actually change the tree of life by favoring certain species over others -- and it may help with conservation efforts in the future.

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

4-Sep-2014
Greenland's ancient temperatures revealed
Researchers studying the last deglaciation, when Earth's ice sheets were beginning to melt, now know more about the temperature of Greenland at that time, thanks to a new report. For years, studies have suggested that Greenland started warming up later than the rest of the Northern Hemisphere -- about 14,700 years ago instead of about 19,000 years ago, when the deglaciation began.

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

28-Aug-2014
In Brazil, conservation is worth the price tag
Researchers have determined that it would cost Brazil less than 1 percent of its gross domestic product, or the total amount of goods and services that the country produces each year, to set aside enough private farmland to conserve the Atlantic Forest -- one of the world's most diverse habitats.

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

21-Aug-2014
Do corals and fish 'sniff' their ways home?
Efforts to restore degraded coral reefs that have been overrun by seaweed could be complicated by some new findings in this week's issue of Science. Danielle Dixson and colleagues studied coral larvae and young reef fish from the coastal waters of Fiji and found that both of these aquatic drifters were attracted to chemical signals released by healthy corals and repulsed by similar cues coming from seaweed.

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

14-Aug-2014
A swarm of a thousand robots
Inspired by swarming insects, like ants or bees, researchers have created a swarm of 1,024 small robots that can communicate with each other and organize themselves into shapes, like stars or letters of the alphabet, without any help from humans. Robotic swarms like this have normally been limited to just dozens or hundreds of robots. But, Michael Rubenstein and colleagues have set a new record with their tiny machines, called Kilobots.

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

7-Aug-2014
A real-life, origami-inspired transformer
Using flat materials and origami-inspired patterns, researchers have built a real-life transformer -- a self-folding robot that, once assembled, can crawl and turn. This advance is reported in the Aug. 8 issue of the journal Science. Such a self-folding machine has various potential applications, including delivery to tight spaces, like rooms in collapsed buildings, for search and rescue missions.

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

31-Jul-2014
A recipe for birds: 50 million years of dinosaur shrinking
To give us birds as we know them today, the line of dinosaurs that evolved into birds shrank in body size continuously for 50 million years, a new study in the Aug. 1 issue of Science reports.

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

24-Jul-2014
Earth's disappearing animals
This week, a special issue of Science highlights humans' role in the recent extinctions of many species. There have been five mass extinction events on Earth, documented by the fossil record, and researchers say that the planet is currently in the midst of a 'sixth extinction wave.'

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

16-Jul-2014
Keeping the heart on beat
Scientists have figured out how to genetically tweak heart tissue to keep the heart beating normally. The findings appear in the July 16 issue of the journal Science Translational Medicine.

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

10-Jul-2014
Smaller plastic, bigger problem
Even very small fragments of plastic can be harmful to life in the ocean, according to a new Policy Forum in the July 11 issue of Science. In this Policy Forum, Kara Law and Richard Thompson explain the dangers of pieces of plastic smaller than a few millimeters, called microplastics.

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

3-Jul-2014
Planet's signals are tricks created by starry noise
Regions of strong activity coming from stars have made scientists think they are planets, a new study reports in the July 4 issue of the journal Science reports, when in reality, they are not.

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

26-Jun-2014
Extra smells make finding flowers harder
Insects consume nectar from flowers. To find their favorite flowery snacks, they follow the odors flowers give off, but a new study in the June 27 issue of the journal Science reports that competing odors, including manmade ones, make this task harder for bugs.

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

19-Jun-2014
Skulls with mix of traits shine light on human evolution
Researchers have analyzed the biggest collection of ancient human fossils ever recovered from a single excavation site. Their study in the 20 June issue of the journal Science sheds light on the origin and evolution of Neandertals, an extinct species of human.

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

12-Jun-2014
Are isolated plant populations more prone to disease?
Researchers have generally believed that diseases spread quicker among densely clustered populations and slower among populations that are spread out. However, a new study of the weed, Plantago lanceolata, and a fungal pathogen, known as powdery mildew, which infects the weed, shows that highly connected plant populations -- those that are growing close together -- are more resistant to the powdery mildew than isolated populations of the plant.

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

5-Jun-2014
Sensors help catfish 'see' in the dark
Researchers have discovered that the Japanese sea catfish, Plotosus japonicas, has sensors on the outside of its body that detect slight changes in the water's pH level. In other words, these sensors can help the fish tell if the water they're swimming in becomes a little more acidic or basic -- an ability that helps them hunt in dark, murky waters.

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

29-May-2014
Slowly removing invasive species spares the natives
Sometimes, getting rid of invasive species is harder than it sounds because native plants and animals come to rely on them for resources. Now, however, Adam Lampert and colleagues have come up with a new way to get rid of invasive species that also protects native species more effectively. But, it may take more time than traditional approaches, they say.

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

22-May-2014
Unexpected twist in evolution of flightless birds
Ratite birds, some of the largest flightless birds, live all over the world, and now a new study published in the May 23 issue of the journal Science suggests they spread so far over not because big landmasses split up, forcing their separation, but because their ancestors flew far and wide. It was only after separating, this study says, that most members of this group lost the ability to fly.

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

15-May-2014
Stick bugs show that some evolution is predictable
If we could go back to the beginning of life on Earth -- or rewind 'the tape of life,' as scientists say -- would plants and animals evolve exactly the same way they did? Or would it have all gone differently? It's a question that researchers have been trying to answer for a long time.

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

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

Showing stories 1-25 out of 577 stories.
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Funding provided by the William T. Golden Endowment Fund for Program Innovation at AAAS.