Agriculture
Hungry bug seeks hot meal
Got Milk? How?
Where Have All the Bees Gone?
Amphibians
Salamanders and Newts
Salamanders
Bullfrogs
Animals
Revenge of the Cowbirds
A Jellyfish's Blurry View
Bee Heat Cooks Invaders
Behavior
Nice Chimps
Babies Prove Sound Learners
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Birds
Ospreys
Chicken
Ducks
Chemistry and Materials
Small but WISE
Makeup Science
A Framework for Growing Bone
Computers
Play for Science
The Earth-bound asteroid scientists saw coming
Electronic Paper Turns a Page
Dinosaurs and Fossils
Have shell, will travel
Message in a dinosaur's teeth
Dinosaur Dig
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Warmest Year on Record
Springing forward
A Dire Shortage of Water
Environment
Improving the Camel
Fishing for Fun Takes Toll
Inspired by Nature
Finding the Past
Ancient Art on the Rocks
Watching deep-space fireworks
A Long Trek to Asia
Fish
Whale Sharks
Eels
Lungfish
Food and Nutrition
Sponges' secret weapon
How Super Are Superfruits?
Strong Bones for Life
GSAT English Rules
Adjectives and Adverbs
Subject and Verb Agreement
Who vs. Whom
GSAT Exam Preparation Jamaica
10 Common Mistakes When Preparing for the GSAT Math Test
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
Detecting True Art
Math is a real brain bender
It's a Math World for Animals
Human Body
Fighting Off Micro-Invader Epidemics
Gut Microbes and Weight
Sun Screen
Invertebrates
Lobsters
Sea Anemones
Centipedes
Mammals
Chihuahuas
Bulldogs
Basset Hounds
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
Children and Media
Physics
Invisibility Ring
IceCube Science
One ring around them all
Plants
Fungus Hunt
When Fungi and Algae Marry
Making the most of a meal
Reptiles
Lizards
Geckos
Reptiles
Space and Astronomy
Slip-sliding away
World of Three Suns
Asteroid Lost and Found
Technology and Engineering
Smart Windows
Dancing with Robots
A Clean Getaway
The Parts of Speech
What is a Verb?
Pronouns
What is a Preposition?
Transportation
Ready, unplug, drive
Charged cars that would charge
Reach for the Sky
Weather
In Antarctica watch the heat (and your step)
Antarctica warms, which threatens penguins
Weekend Weather Really Is Different
Add your Article

Melting Snow on Mars

The search for life on Mars often starts with a search for water. That's because life as we know it can't exist without the wet stuff. And while scientists haven't yet found any Martians crawling around—let alone flowing water on the planet—there have been some encouraging hints that life could exist on Mars. One of the most exciting signs came from a spacecraft in 2000 that revealed loads of gullies, which look like they were carved by water. Ever since then, space scientists have been trying to figure out where the water that carved the gullies could have come from. Now, a scientist from Arizona thinks he has an explanation: snow. When Philip R. Christensen of Arizona State University in Tempe looked at pictures taken by the Mars Odyssey spacecraft, he saw light-colored blotches that looked like blankets of snow. Christensen proposes that newly fallen snow mixes with Martian dust to create a thermal blanket, which absorbs the sun's energy and melts layers of snow underneath. It would take about 5,000 years to carve out a gully that way, he estimates. The orbiting spacecraft's pictures didn't turn up any alien creatures. But images and soil samples from future missions that land on the Red Planet might tell a different story. Mars today, says Bruce M. Jaksosky of the University of Colorado in Boulder, "appears to be right on the verge of being habitable by microbes."—E. Sohn

Melting Snow on Mars
Melting Snow on Mars








Designed and Powered by HBJamaica.com™