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A Seabird's Endless Summer
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GSAT Mathematics Quiz, Teaching Math, teaching anxiety
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Condors
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The metal detector in your mouth
Sugary Survival Skill
Picture the Smell
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Nonstop Robot
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2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
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Earth
In Antarctica watch the heat (and your step)
A Dire Shortage of Water
Getting the dirt on carbon
Environment
Alien Invasions
Fishing for Fun Takes Toll
Indoor ozone stopper
Finding the Past
Chicken of the Sea
Meet your mysterious relative
Big Woman of the Distant Past
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Puffer Fish
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In Search of the Perfect French Fry
Moving Good Fats from Fish to Mice
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GSAT English Rules
Whoever vs. Whomever
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2014 GSAT Results for Jamaican Kids
GSAT Exam Preparation
Ministry of Education Announces 82 GSAT Scholarships for 2010
GSAT Exams Jamaica Scholarships
42,000 students will sit for the GSAT Exam in two weeks
GSAT stars reap scholarship glory
GSAT Exam Preparation
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E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
It's a Math World for Animals
Human Body
Opening a Channel for Tasting Salt
Nature's Medicines
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Invertebrates
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Sponges
Moths
Mammals
Siamese Cats
Narwhals
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Children and Media
What Not to Say to Emerging Readers
How children learn
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Echoes of a Stretched Egg
Hold on to your stars, ladies and gentlemen
The Mirror Universe of Antimatter
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Fast-flying fungal spores
Sweet, Sticky Science
Surprise Visitor
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Wrong-way planets do gymnastics
Planets on the Edge
The two faces of Mars
Technology and Engineering
Switchable Lenses Improve Vision
Supersuits for Superheroes
A Clean Getaway
The Parts of Speech
What is a Preposition?
Problems with Prepositions
Countable and Uncountable Nouns
Transportation
Where rivers run uphill
Seen on the Science Fair Scene
Are Propellers Fin-ished?
Weather
In Antarctica watch the heat (and your step)
Catching Some Rays
The Best Defense Is a Good Snow Fence
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Of Lice and Old Clothes

Scratch, scratch, scratch, scratch. Head lice can be a real pain, and they can keep you out of school until you get them out of your hair. Now, it appears that head lice and their cousins, body lice, might help solve a longstanding mystery: When did people start wearing clothes? Was it half a million years ago, or was it perhaps only in the last 30,000 years? Scientists in Germany think they've found an answer by looking at the history of human lice, those tiny critters that make us all cringe and grab the medicated shampoo. Head lice dwell among the hairs on your head, and they like to feast on the tiny flakes of dead skin on your scalp. Body lice, however, live on your clothes and eat dead skin on the rest of your body. So, to have body lice, you need to have clothes. The researchers say that, at one time, there were just head lice. Body lice diverged from head lice about 70,000 years ago, give or take 40,000 years. The appearance of body lice suggests that people started wearing clothes at roughly the same time. Not everyone agrees with this view, though. Some say that people living in northern Europe half a million years ago would have needed clothes to survive the cold weather. Other scientists say they aren't sure that head lice and body lice really are separate species. Whatever the case may be, it seems there's one sure cure for body lice: going around naked!—S. McDonagh

Of Lice and Old Clothes
Of Lice and Old Clothes








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