Agriculture
Chicken Eggs as Drug Factories
Making the most of a meal
Watering the Air
Amphibians
Salamanders
Salamanders and Newts
Toads
Animals
Deep Krill
Blotchy Face, Big-Time Wasp
Feeding School for Meerkats
Behavior
Listening to Birdsong
Island of Hope
Newly named fish crawls and hops
Birds
Backyard Birds
Crows
Doves
Chemistry and Materials
A Butterfly's Electric Glow
Batteries built by Viruses
The hottest soup in New York
Computers
Look into My Eyes
Toxic Dirt + Avian Flu = Science Fair Success
Games with a Purpose
Dinosaurs and Fossils
Meet your mysterious relative
The man who rocked biology to its core
Dino Bite Leaves a Tooth
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Watering the Air
Surf Watch
Salty, Old and, Perhaps, a Sign of Early Life
Environment
Where rivers run uphill
A Change in Leaf Color
Whale Watch
Finding the Past
Traces of Ancient Campfires
The Puzzle of Ancient Mariners
Digging Up Stone Age Art
Fish
Pygmy Sharks
Puffer Fish
Seahorses
Food and Nutrition
Symbols from the Stone Age
Food for Life
A Pepper Part that Burns Fat
GSAT English Rules
Who vs. Whom
Adjectives and Adverbs
Whoever vs. Whomever
GSAT Exam Preparation Jamaica
2014 GSAT Results for Jamaican Kids
10 Common Mistakes When Preparing for the GSAT Math Test
The Annual GSAT Scholarships
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
Access denied - Disabled boy aces GSAT
GSAT Exam Preparation
GSAT Mathematics
Setting a Prime Number Record
Math of the World
Math and our number sense: PassGSAT.com
Human Body
Taking the sting out of scorpion venom
Sun Screen
Tapeworms and Drug Delivery
Invertebrates
Clams
Beetles
Earthworms
Mammals
Vampire Bats
Bison
Gray Whale
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
How children learn
Physics
Powering Ball Lightning
Electric Backpack
The Particle Zoo
Plants
White fuzzy mold not as friendly as it looks
When Fungi and Algae Marry
Hungry bug seeks hot meal
Reptiles
Box Turtles
Snapping Turtles
Crocodiles
Space and Astronomy
Cousin Earth
A Family in Space
Gravity Tractor as Asteroid Mover
Technology and Engineering
Supersuits for Superheroes
Riding Sunlight
A Satellite of Your Own
The Parts of Speech
What is a Noun
Countable and Uncountable Nouns
Problems with Prepositions
Transportation
Robots on a Rocky Road
Morphing a Wing to Save Fuel
Reach for the Sky
Weather
Recipe for a Hurricane
The Best Defense Is a Good Snow Fence
Where rivers run uphill
Add your Article

Chimpanzee Hunting Tools

Pictures of our ancestors often show men hunting with spears, arrows, and other tools. Scientists have long thought that only humans made tools for the hunt. They've also assumed that men did most of the hunting. Now, for the first time, scientists have observed wild chimpanzees hunting with tools. What is just as surprising, females and young chimps outnumber males in these hunts. The discovery throws into question many assumptions about human evolution. Researchers from Iowa State University in Ames and the University of Cambridge in England studied 35 chimps in Senegal, a country in western Africa. The primates live in an area of savannah called Fongoli. Among other food sources, the Fongoli chimps eat squirrel-size primates called bush babies. Between March 2005 and July 2006, the scientists watched Fongoli chimps use tools to go after bush babies 22 times. To make their tools, the chimps ripped branches from trees. They usually chose branches that were about 18 inches long. Then they broke off twigs and leaves and often peeled off the bark to make the branches more spearlike. They sometimes used their teeth to make the branches sharper. They then used the tools to stab at holes in tree trunks where bush babies sleep during the day. Most of these attempts failed. Once, however, the scientists saw a female chimp hit a bush baby with her spear. Then, she grabbed it out of its nest and ate it. In total, the scientists watched 10 Fongoli chimps hunt with tools. Only one of the hunters was an adult male. The rest were females and juveniles. This finding was unusual because researchers elsewhere have observed only male chimps hunting monkeys. These other males worked in teams and shared their prey with others in their group, but they didn't use tools to catch the monkeys. This study points out that females often come up with new ideas and that young primates are often first to pick up on those new ideas. Spear-hunting behavior is "yet another example of chimpanzee cultures," says anthropologist Linda F. Marchant of Miami University in Oxford, Ohio. Different groups of chimps probably come up with their own customs and behaviors, she says, just as different groups of people do. The scientists suspect that the chimps in Fongoli are behaving much as our ancestors did 3 million years ago. But wooden tools rarely last as long as fossilized bones do, so archaeologists might never find our ancestors' first hunting spears.E. Sohn

Chimpanzee Hunting Tools
Chimpanzee Hunting Tools








Designed and Powered by HBJamaica.com™