Agriculture
Watching out for vultures
Treating peanut allergy bit by bit
Got Milk? How?
Amphibians
Toads
Poison Dart Frogs
Salamanders and Newts
Animals
Armadillo
New Elephant-Shrew
Roboroach and Company
Behavior
Flower family knows its roots
Brainy bees know two from three
Baby Number Whizzes
Birds
Cassowaries
Crows
Kingfishers
Chemistry and Materials
Sugary Survival Skill
Toxic Dirt + Avian Flu = Science Fair Success
Gooey Secrets of Mussel Power
Computers
A New Look at Saturn's rings
Seen on the Science Fair Scene
Graphene's superstrength
Dinosaurs and Fossils
A Living Fossil
A Dino King's Ancestor
Winged Insects May Go Way Back
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Farms sprout in cities
Snowflakes and Avalanches
Coral Islands Survive a Tsunami
Environment
A Change in Climate
The Wolf and the Cow
Whale Watch
Finding the Past
Decoding a Beverage Jar
Unearthing Ancient Astronomy
Chicken of the Sea
Fish
Mahi-Mahi
Puffer Fish
Skates and Rays
Food and Nutrition
Strong Bones for Life
A Taste for Cheese
Recipe for Health
GSAT English Rules
Who vs. That vs. Which
Whoever vs. Whomever
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
Mastering The GSAT Exam
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Exam Preparation
GSAT Mathematics
A Sweet Advance in Candy Packing
How to Slice a Cake Fairly
Secrets of an Ancient Computer
Human Body
Foul Play?
Sea Kids See Clearly Underwater
A New Touch
Invertebrates
Sponges
Jellyfish
Dragonflies
Mammals
Yaks
Kangaroos
Donkeys
Parents
Raise a Lifelong Reader by Reading Aloud
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
Physics
Gaining a Swift Lift
Echoes of a Stretched Egg
Speedy stars
Plants
Fastest Plant on Earth
Stalking Plants by Scent
Hungry bug seeks hot meal
Reptiles
Snapping Turtles
Garter Snakes
Turtles
Space and Astronomy
Sounds of Titan
Planet Hunters Nab Three More
Asteroid Moons
Technology and Engineering
A Clean Getaway
Beyond Bar Codes
Shape Shifting
The Parts of Speech
What is a Verb?
Countable and Uncountable Nouns
What is a Noun
Transportation
Robots on the Road, Again
Revving Up Green Machines
Are Propellers Fin-ished?
Weather
A Dire Shortage of Water
Antarctica warms, which threatens penguins
Science loses out when ice caps melt
Add your Article

Meet your mysterious relative

Her scientific name is Ardipithecus ramidus, and scientists call her Ardi for short. She is ancient — her bones are 4.4 million years old — and is making scientists think about the distant past in a whole new way. Ardi is an example of an extinct species that may help scientists understand how human beings evolved the way we did. She is a hominid, which means she belongs to the same evolutionary family as people. It’s not clear whether Ardi was a direct ancestor of humans. Scientists have just published more than a dozen studies on Ardi’s species — and this is just the first wave. Ardi’s skeleton is so surprising that “no one could have imagined it without direct fossil evidence,” says Tim White, an anthropologist at the University of California, Berkeley, who has studied Ardi. (An anthropologist is a scientist who studies human beings and their ancestors.). Ardi first started to show up in 1992, when scientists found her fossilized teeth in Ethiopia. In 1994, her hand bone was found. For three years after that, scientists worked to remove more of her skeleton, including her arms, hands, pelvis, legs and feet. She was believed to be female because she had a relatively small skull and small canine teeth. Between 1981 and 2004, scientists removed other skeletons of other individuals of the same species from the same area. They also removed fossils of other animals and of plants. White says Ardipithecus looks different from any living primate, so it’s hard to get an idea of Ardi’s appearance by looking at modern primates such as monkeys or apes. Some scientists have believed that the common ancestor of people and apes resembled a chimpanzee, but Ardi shows that idea may not be true. Ardi’s partial skeleton that scientists have found shows that she could walk upright and easily climb trees and move along branches — traits more easily identified in monkeys or apes. It also shows that Ardi probably couldn’t swing from branch to branch. “It now seems that the last common ancestor of chimpanzees and humans was much less chimplike than previously thought,” says Alan Walker, an anthropologist at Pennsylvania State University in University Park. White and his team think Ardi probably stood almost four feet tall and weighed about 110 pounds. This means Ardi is significantly larger than Lucy, a partial skeleton from a different species that lived on Earth 3.2 million years ago. Lucy was also found in Ethiopia. Even though Lucy and Ardi came from different species, they are probably related. Scientists may be able to use information from Ardi’s discovery to learn more about how Lucy’s species evolved. Owen Lovejoy, an anthropologist at Kent State University in Ohio, also thinks scientists can learn a lot from Ardi’s teeth. He says small canines — especially in the males of the species — suggest that the males rarely fought. Male apes with large canines often show their teeth when they’re fighting over females. In Ardi’s teeth, Lovejoy sees the beginning of an evolutionary process that led to human beings. “This is one of the most revealing hominid fossils that I could have imagined,” he says.

Meet your mysterious relative
Meet your mysterious relative








Designed and Powered by HBJamaica.com™