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Showing stories 276-300 out of 509 stories.
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More nutritious corn for kids around the world
New research may help plant breeders develop corn (known as maize in many parts of the world), with higher levels of an important nutrient. The body uses this nutrient to make vitamin A, which is very important for staying healthy. Vitamin A deficiency causes eye disease in 40 million children each year and places 140 to 250 million at risk for a variety of health disorders, according to study author Carlos Harjes of Cornell University and his colleagues.
Contact: Science Press Team
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
 |
Elephants, giraffes and the ants in their plants
Nobody wants to see the elephants, giraffes and other grazing animals disappear from the eastern African savanna, but it's not just people who would miss them. Researchers have discovered that many of the ants and trees that share the mammals' turf would suffer, too.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Butterfly larvae fool ants into mothering them
Danish researchers have found that in some areas in their country, beautiful blue Alcon butterflies fool ants into raising the butterfly larvae instead of their own, a report explains. The reason? The butterflies have developed an outer coating that mimics that of the ants.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Organizing the beetle files
When biologists set out to organize the family tree for the huge family of beetles, they ended up identifying previously unknown relationships for many of the beetle groups -- somewhat like finding new cousins -- and re-defining the major families, new research shows.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Habitat split leads to biodiversity decline
Amphibians such as frogs are at risk, especially those that have to travel from their homes in forest habitats to aquatic areas to breed and back; and with this added risk, the diversity, or variety, of species declines, according to a new report. Traveling to the water to breed, then returning to the forest is called habitat split, and researchers say that it is usually caused by human activity.
Contact: SciPak
sciapk@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Hinode mission delves into the Sun's mysteries
New results from the Hinode space mission should help explain some long-standing mysteries of the Sun. ("Hinode" is Japanese for "sunrise.")
Contact: SciPak
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
In early human ancestor, growing up came late for males
If Paranthropus robustus -- a human ancestor that lived about 2 million years ago -- had gone to school dances, it would have been pretty awkward. New research shows that the males of this species matured much later in life than females.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
A supercontinent that stayed put
For about 100 million years of Earth's history, from the Permian through the Jurassic periods, all of Earth's continents were actually joined as a single supercontinent, called Pangea ("pan-JEE-uh"). It began breaking up during the Jurassic, forming the continents Gondwanaland and Laurasia.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
'Roach-bots' guide cockroach swarms
When a handful of cockroach-like robots joined a group of real roaches, the roach-bots coaxed the whole group to behave in unusual ways, researchers report in a new study.
Contact: Scipak
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Spadefoot toads break the rules in dry weather
Desert-dwelling animals have all kinds of clever tricks for surviving in their dry environments. This includes the spadefoot toad, which is named for the hard, pointy "spade" on its hind feet, which is used for digging.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
They don't fly, they aren't lemurs, but colugos are our closest relative
Researchers have determined that colugos are the closest relative to primates, according to a Science research article. Humans belong to the biological order of primates along with apes, monkeys and lemurs. Knowing who we are related to allows researchers the opportunity to study how we primates evolved from our nearest relative.
Contact: SciPak
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Neanderthals may have been redheads
Some Neanderthals -- relatives to modern humans, who lived in Europe and Central Asia approximately 230,000 to 30,000 years ago -- may have had genetic variations that hypothetically could have produced pale skin and red hair, a European research team has found.
Contact: SciPak
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
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A mutation in a dog gene opens new research into the defensin protein
Researchers who were trying to find the mutated gene that controls coat color in dogs now report that they found the gene, and have also discovered that it has an unexpected additional role. The gene also sends a signal to a member of a protein family that is responsible for defending the body against infection. The proteins are called defensins, because their job is to defend the body.
Contact: SciPak
sciapk@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Titan's morning weather forecast: Widespread drizzle
Mornings on Saturn's moon Titan are often cloudy and drizzly over a wide area, according to a new astronomy/weather report by astronomers using giant telescopes on Earth.
Contact: SciPak
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Wild crows are crafty with tools
Recording themselves on tiny video cameras attached to their tailfeathers, New Caledonian crows have revealed themselves to be resourceful tool-users in the wild.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
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Research supports oral histories of distant marine travel across the Pacific
Stories passed down for generations in the Pacific islands tell of regular maritime travel over several thousands of kilometers while most people were still traveling only in sight of land and long before Europeans began their world travels. Two Australian scientists reported this week that they found evidence to support these oral histories.
Contact: SciPak
sciapk@aaas.org
202-326-6440
American Association for the Advancement of Science
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Keeping it clean at Mars' South Pole
Though we can't say you'd want to drink it, the water frozen in Mars' south polar ice cap is pretty pure, a new study suggests. Scientists have known that both poles of Mars are hidden beneath caps of layered ice. But they're only just learning how much ice there is and what it's made of.
Contact: SciPak
sciapk@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Searching by starlight for the universe's mysterious dark matter
The objects that we can see in the universe, from the smallest speck of sand to the largest planet, are made up of protons, electrons and neutrons. But, most of the universe's matter is "dark matter." We can't see it, because it doesn't interact with light, and we don't even know what kind of particles it's made up of. Now, researchers think they know a way to learn more about this mysterious type of matter.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Higher social skills are distinctly human, toddler and ape study reveals
You may wonder about your younger sibling's social abilities, but new research reveals that while they may sometimes act ape-like, they are really showing their higher social skills by the time they are 18-months-old.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Some early urban cities grew from the outside-in
Rising out of a field in northeastern Syria is an archaeological site that tells a slightly different story about the evolution of early urban centers from what researchers have previously believed. The city grew with an unusual "outside-in" growth pattern, according to a study in Science.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Dark side of Uranus' rings provides new view
The first images of the rings of the planet Uranus from a ground telescope show a system of rings that have changed since the first pictures were taken 20 years ago, a new report states.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Mama bird benefits from help
When mother fairy wrens have helpers that share baby-feeding duties, they save their own strength and lay smaller eggs, researchers report.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Successful conservation stories from across the globe
A trio of new studies published in Science this week provides examples of successful conservation efforts on three continents.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Toddler talk
If you know any toddlers, you've probably wondered what is going on in their heads as they put their (full) bowls on their head at mealtime or run around in circles, shrieking for no apparent reason.
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Who's watching you?
Research shows that humans switch from selfish to unselfish behavior when they are watched. Do you?
Contact: Science Press Package
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
|
Showing stories 276-300 out of 509 stories.
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Funding provided by the William T. Golden Endowment Fund for Program Innovation at AAAS.