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Cleaning Up Fish Farms
Microbes at the Gas Pump
Frogs and Toads
Salamanders and Newts
Dolphin Sponge Moms
A Microbe Nanny for Young Wasps
A Jellyfish's Blurry View
The Disappearing Newspaper
Math Naturals
Night of the living ants
Chemistry and Materials
A Light Delay
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A Butterfly's Electric Glow
Batteries built by Viruses
It's a Small E-mail World After All
Middle school science adventures
Dinosaurs and Fossils
Have shell, will travel
Fingerprinting Fossils
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Earth Rocks On
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The Birds are Falling
Inspired by Nature
Sea Otters, Kelp, and Killer Whales
Finding the Past
Meet your mysterious relative
Oldest Writing in the New World
Preserving Ancient Warrior Paint
Great White Shark
Food and Nutrition
Allergies: From Bee Stings to Peanuts
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GSAT English Rules
Order of Adjectives
Who vs. Whom
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GSAT Exam Preparation Jamaica
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GSAT Practice Papers | GSAT Mathematics | Maths
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42,000 students will sit for the GSAT Exam in two weeks
Human Body
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Football Scrapes and Nasty Infections
Prime Time for Broken Bones
Giant Squid
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Flying Foxes
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Children and Media
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Einstein's Skateboard
Dreams of Floating in Space
Spin, Splat, and Scramble
Fast-flying fungal spores
White fuzzy mold not as friendly as it looks
When Fungi and Algae Marry
Komodo Dragons
Space and Astronomy
Cousin Earth
Ringing Saturn
Phantom Energy and the Big Rip
Technology and Engineering
Young Scientists Take Flight
Dancing with Robots
Algae Motors
The Parts of Speech
Problems with Prepositions
Countable and Uncountable Nouns
What is a Noun
Charged cars that would charge
Are Propellers Fin-ished?
Seen on the Science Fair Scene
Warmest Year on Record
The solar system's biggest junkyard
Earth's Poles in Peril
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Sticky Silky Feet

Comic book superhero Spider-Man uses tiny hairs on his fingertips to climb up walls. But he could have had another secret weapon to help him stick. Scientists have now found that some spiders can also make silk in their feet, which may sometimes help them get a firmer grip on a surface. Spiders are good at gripping walls with their legs. Thousands of little hairs on their feet make it possible. To test whether spiders also make these hairs wet to improve grip, scientists watched zebra tarantulas crawl up glass slides. When they tilted a glass slide until it was almost vertical, the spider slipped a few millimeters before attaching itself again. The scientists were surprised to see little threads stretching from its feet to the slide. When they studied the spider's feet under a special microscope, they found tiny silk-shooting spouts among the hairs. This was a surprise because scientists had previously thought spiders only use special organs near their stomachs to make silk. It's possible that, a long time ago, feet were the first body parts of spiders to produce silk. Only later in their evolutionary history did spiders develop spinnerets on their abdomens to produce silk for webs. If so, the researchers say, this could mean that the silk's original purpose was to help spiders climb and stick, rather than to build homes or trap prey.óC. Gramling

Sticky Silky Feet
Sticky Silky Feet

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