Silk’s superpowers
Cleaning Up Fish Farms
Growing Healthier Tomato Plants
Frogs and Toads
Monkeys Count
Crocodile Hearts
Assembling the Tree of Life
Ear pain, weight gain
Storing Memories before Bedtime
The Colorful World of Synesthesia
Backyard Birds
Chemistry and Materials
Mother-of-Pearl on Ice
The hungry blob at the edge of the universe
The solar system's biggest junkyard
Toxic Dirt + Avian Flu = Science Fair Success
Galaxies on the go
A Light Delay
Dinosaurs and Fossils
A Big, Weird Dino
Some Dinos Dined on Grass
Battling Mastodons
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
What is groundwater
Coral Islands Survive a Tsunami
Wave of Destruction
Animal CSI or from Science Lab to Crime Lab
Food Web Woes
Cactus Goo for Clean Water
Finding the Past
Ancient Cave Behavior
Big Woman of the Distant Past
Fakes in the museum
Nurse Sharks
Hammerhead Sharks
Food and Nutrition
Strong Bones for Life
Making good, brown fat
The mercury in that tuna
GSAT English Rules
Subject and Verb Agreement
Order of Adjectives
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Ministry of Education Announces 82 GSAT Scholarships for 2010
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Deep-space dancers
Math of the World
GSAT Practice Papers | GSAT Mathematics | Maths
Human Body
Nature's Medicines
Teen Brains, Under Construction
What the appendix is good for
Sea Urchin
How children learn
Choosing a Preschool: What to Consider
Expert report highlights the importance to parents of reading to children!
Hold on to your stars, ladies and gentlemen
The Mirror Universe of Antimatter
Einstein's Skateboard
Fast-flying fungal spores
Underwater Jungles
Fastest Plant on Earth
Black Mamba
Space and Astronomy
Solving a Sedna Mystery
Icy Red Planet
Unveiling Titan
Technology and Engineering
Morphing a Wing to Save Fuel
A Satellite of Your Own
Beyond Bar Codes
The Parts of Speech
Problems with Prepositions
What is a Preposition?
Morphing a Wing to Save Fuel
Robots on a Rocky Road
Troubles with Hubble
The Best Defense Is a Good Snow Fence
Watering the Air
Either Martians or Mars has gas
Add your Article

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.—C. Gramling

Sticky Silky Feet
Sticky Silky Feet

Designed and Powered by™