Agriculture
Watering the Air
Vitamin D-licious Mushrooms
Microbes at the Gas Pump
Amphibians
Bullfrogs
Tree Frogs
Toads
Animals
Walks on the Wild Side
Staying Away from Sick Lobsters
The Secret Lives of Grizzlies
Behavior
The Colorful World of Synesthesia
Calculating crime
Monkeys in the Mirror
Birds
Hawks
Lovebirds
Tropical Birds
Chemistry and Materials
Mother-of-Pearl on Ice
A New Basketball Gets Slick
Makeup Science
Computers
Earth from the inside out
Hitting the redo button on evolution
Play for Science
Dinosaurs and Fossils
Digging for Ancient DNA
Teeny Skull Reveals Ancient Ancestor
Dino-Dining Dinosaurs
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Coral Gardens
What is groundwater
Riding to Earth's Core
Environment
An Ocean View's Downside
A Vulture's Hidden Enemy
Spotty Survival
Finding the Past
Little People Cause Big Surprise
Of Lice and Old Clothes
Unearthing Ancient Astronomy
Fish
Catfish
Flounder
Codfish
Food and Nutrition
Packing Fat
Food for Life
Allergies: From Bee Stings to Peanuts
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
GSAT Scholarship
Mastering The GSAT Exam
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Play for Science
Losing with Heads or Tails
Human Body
Running with Sneaker Science
Sun Screen
From Stem Cell to Any Cell
Invertebrates
Crawfish
Tapeworms
Octopuses
Mammals
Dogs
Elephants
Bobcats
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
Physics
Black Hole Journey
Einstein's Skateboard
Dreams of Floating in Space
Plants
White fuzzy mold not as friendly as it looks
Seeds of the Future
Assembling the Tree of Life
Reptiles
Sea Turtles
Crocodilians
Copperhead Snakes
Space and Astronomy
Ready, Set, Supernova
Unveiling Titan
A Galaxy Far, Far, Far Away
Technology and Engineering
A Satellite of Your Own
Beyond Bar Codes
Spinach Power for Solar Cells
The Parts of Speech
What is a Verb?
Countable and Uncountable Nouns
What is a Noun
Transportation
How to Fly Like a Bat
Revving Up Green Machines
Ready, unplug, drive
Weather
Watering the Air
Recipe for a Hurricane
A Change in Climate
Add your Article

Ancient Cave Behavior

People have been acting like people—in other words, they've been making tools, creating rituals, and sharing food—for a long time. That's the conclusion of a recent study from South Africa's southern coast. There, in a cave perched above the sea, researchers from Arizona State University in Tempe have found evidence that humans were behaving in surprisingly complex ways as early as 164,000 years ago. Our species, Homo sapiens, emerged an estimated 200,000 years ago. The cave held three important clues about the behavior of these Stone Age people. First, the researchers found the remains of a variety of shellfish, including mussels, giant periwinkles, and limpets. The cave dwellers probably collected these creatures from rocky shores and tide pools and brought them to the cave to eat. The researchers propose that the early Africans moved to the South African coast between 195,000 and 130,000 years ago. Around that time, the climate inland turned relatively cold and dry. As a result, there were fewer plants and animals to eat away from the coast. When these ancient people moved to the coast, they probably experienced a major cultural shift, the researchers suspect. That's because observations of modern hunter-gatherer societies suggest that men are more likely to hunt for big animals when people live inland. On the coast, women play a more important role in providing food by gathering plants and shellfish. As for the second clue, the researchers unearthed 57 pieces of reddish pigment. The researchers think that the cave dwellers used the pigment for coloring their bodies or for other rituals. Symbolic behavior is a distinctly human trait. Finally, the search turned up more than 1,800 stone tools, including well-crafted blades. These double-edged blades came in a variety of sizes. The smallest were just less than a half-inch wide. Ancient people may have attached these blades to the end of a stick to make spears or other tools. Until now, the earliest evidence of similar blades dates back just 70,000 years. The new discoveries support the theory that modern human behavior developed gradually, starting about 285,000 years ago, say some experts. An alternative theory proposes that people developed modern behavior much more recently—perhaps around 45,000 years ago. It's also possible that complex behavior developed at different rates in different places.—Emily Sohn

Ancient Cave Behavior
Ancient Cave Behavior








Designed and Powered by HBJamaica.com™