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Showing stories 451-475 out of 579 stories.
<< < 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 > >>


22-Dec-2005
Water in the trunk of a tree
Every December, people cut down pine trees and other evergreens and stick them in their houses. The trees start sucking up water right away (unless you wait too long between cutting the tree and putting it in water, of course). A new study helps to explain how the heck water moves up the trunk of cone-making trees called "conifers."

Contact: Science Press Package
202-326-6400
American Association for the Advancement of Science

15-Dec-2005
Aquarium fish and human skin color
Zebrafish, tiny aquarium fish with stripes on their sides, have helped scientists explain – in terms of genetic makeup – the variety of colors that human skin comes in.

Contact: Science Press Package
202-326-6440
American Association for the Advancement of Science

8-Dec-2005
When did 'pet rocks' and 'wild rocks' become cool?
"Pet rocks" became cool in 1975 -- they suddenly seemed like the perfect low-maintenance pet, and almost instantly, people were buying pet rocks like crazy. You could teach a pet rock to sit and play dead instantly!

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

1-Dec-2005
Earliest bird had dino-like feet
A new fossil discovery shows that the earliest birds had feet similar to those of theropod dinosaurs (the group of two-legged, meat-eating dinosaurs that includes T. rex). The new specimen provides important details about the feet and skull of these birds and strengthens the argument -- which many but not all scientists agree on -- that modern birds arose from theropod dinosaurs.

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

24-Nov-2005
New 'time machine' from ice
Thanks to air bubbles trapped in a long cylinder of ice from a glacier in Antarctica, scientists have jumped an extra 210,000 years back in time. This scientific "time machine" now tells us how much carbon dioxide and methane was in the air as far back as 650,000 years ago.

Contact: Science press package
scipak@aaas.org
American Association for the Advancement of Science

17-Nov-2005
What do butterfly wings and TV screens have in common?
Many of the gadgets we use every day work by controlling the movement of light waves. CD and DVD players use lasers to read information off disks, allowing us to listen to music or watch movies. Optical fibers carry information signals long distances, in the form of light, allowing telephones and other devices to "talk" to each other.

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

10-Nov-2005
Europe's first farmers
People migrating from the Middle East brought farming techniques to present-day Germany and other parts of central Europe about 7,500 years ago. For years, scientists have been arguing over whether people with European ancestors are closely related to these first farmers. Some scientists say yes. Others say no – and argue instead that people with European roots are closely related to the humans who lived in Europe long before the first farmers showed up.

Contact: Science press package
scipak@aaas.org
American Association for the Advancement of Science

3-Nov-2005
Words versus sentences
It's pretty easy to tell the difference between a word and a sentence. But how your brain works when it reads a word versus how it works when it reads a sentence is still a mystery.

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

27-Oct-2005
Trees protected villages from tsunami waves
In India, trees growing along the coastline helped to protect villages from the "walls of water" or tsunami waves that were triggered by a powerful earthquake that struck beneath the Indian Ocean on 26 December 2004, scientists have discovered.

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

20-Oct-2005
Logging, a bigger threat to the rainforest than we knew
The amount of land in the Amazon rainforest that's being damaged by human activities is twice as large as we had previously thought, suggests a new study. That's because researchers didn't have a good idea of how much logging was occurring there, until now.

Contact: Science press package
scipak@aaas.org
American Association for the Advancement of Science

13-Oct-2005
Green ocean machine
The plants in the window, the trees outside and the broccoli in the refrigerator all have ancient ancestors that didn't used to be green. They only "got green" when they captured smaller green creatures that turn sunlight into food. These small green creatures eventually became the green "chloroplasts" that the plants use to capture energy from the sun through the process of photosynthesis.

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

6-Oct-2005
Great White shark swims laps in the ocean
A great white shark swam across the Indian Ocean twice in nine months. The female shark swam from South Africa to Australia and then back to South Africa, according to a new study.

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

29-Sep-2005
Why good grooming matters for birds
Once barn swallows have chosen their mates for the season, the females may not stay faithful if their males don't keep themselves looking sexy, new research shows.

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

22-Sep-2005
Cicadas star in award-winning movie
"Look at the weird goo sloshing around their eye things!" exclaimed a young viewer of a short film about the massive U.S. cicada invasion of summer 2004. This movie has just won first prize in the Non-Interactive Media category of the 2005 Science & Engineering Visualization Challenge.

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

15-Sep-2005
If the moon didn’t get chicken pox, then
Scars that look like miniature moon craters on your skin are not normally a mystery: a childhood case of the chicken pox is often responsible. What caused the craters on the moon, Mars, Earth, Venus and Mercury is not so obvious. In fact, this "whodunnit" is one of the mysteries of astronomy.

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

8-Sep-2005
Generate electricity while you walk
Scientists have invented a backpack that collects electricity when you walk. This electricity could power a flashlight, a cell phone, night vision goggles, a water purifier, or a combination of these and other electronics all at the same time.

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

1-Sep-2005
Learning about humans by watching chimps
If you've ever looked into the intelligent eyes of a chimpanzee at the zoo, you may have had the feeling that this animal was looking back at you with the same type of curiosity. Our two species have many similarities. We find creative ways to solve problems. We nurture and make each other feel better. We're also capable of being bullies.

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

25-Aug-2005
Climate change scientists take to the trees
Like climbing trees? Not afraid of heights? Climate change researchers might have a job for you some day.

Contact: Science press package
scipak@aaas.org
American Association for the Advancement of Science

18-Aug-2005
See-through ribbons are stronger than steel and much more versatile
Imagine rolling your TV up and putting in your backpack to take with you somewhere. Or pressing a button on a snowy day and having all the snow melt quickly from your windows. These possibilities may become real before long, thanks to a bunch of long, bendy molecules called "carbon nanotubes."

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

11-Aug-2005
Knotted strings, not written records, for the ancient Inkans
For decades, archeologists exploring the remains of the Inkan empire, an ancient civilization in western South America, have found mysterious clusters of knotted strings called "khipu." Because they are so common, khipu appear to be quite important, but what do they mean and what were they used for?

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

4-Aug-2005
Waves taller than a 10-floor building
Ninety foot waves that would snap a ship in two and dwarf a 10-floor building rose from the stormy waters of the Gulf of Mexico in 2004 during Hurricane Ivan, according to new research.

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

28-Jul-2005
Eggs tell story of baby dinosaurs' first steps
Scientists have discovered fossilized eggs containing developing dinosaurs that probably started out moving around on all four limbs before learning to walk only on only two legs -- kind of like people.

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

21-Jul-2005
Flesh-eating caterpillar spins deadly silk
In Hawaiian rainforests, scientists have discovered tiny caterpillars "gluing" snails to leaves with silk webbing and then feasting on snail flesh, leaving nothing but empty shells.

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

14-Jul-2005
Special delivery: How seabirds bring pollution to the Arctic
The arctic landscape is beautifully pristine. You won't see many factories, highways or other signs of industrial civilization. So why do researchers keep finding high levels of pollution there?

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

7-Jul-2005
Blind sea creature hunts with a light
The deep sea is a seriously dark place, so when a light shows up, even a tiny one, fish will swim up for a closer look. That seems to be the strategy behind the glowing red spots used by a relative of the jellyfish, called Erenna. Scientists have just discovered that these creatures have glowing red dots in their tentacles, which are probably used to lure fishy prey.

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

Showing stories 451-475 out of 579 stories.
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Funding provided by the William T. Golden Endowment Fund for Program Innovation at AAAS.