Agriculture
Watering the Air
Growing Healthier Tomato Plants
Watching out for vultures
Amphibians
Poison Dart Frogs
Toads
Salamanders and Newts
Animals
A Jellyfish's Blurry View
Baboons Listen for Who's Tops
Revenge of the Cowbirds
Behavior
Babies Prove Sound Learners
Brain cells take a break
Listen and Learn
Birds
Macaws
Kiwis
Dodos
Chemistry and Materials
Mother-of-Pearl on Ice
Earth from the inside out
The newest superheavy in town
Computers
The solar system's biggest junkyard
Hitting the redo button on evolution
Troubles with Hubble
Dinosaurs and Fossils
Fossil Fly from Antarctica
Big Fish in Ancient Waters
Mammals in the Shadow of 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
Snowflakes and Avalanches
Warmest Year on Record
Polar Ice Feels the Heat
Environment
Indoor ozone stopper
Where rivers run uphill
Saving Wetlands
Finding the Past
Decoding a Beverage Jar
Early Maya Writing
Untangling Human Origins
Fish
Sting Ray
Whale Sharks
Skates
Food and Nutrition
Building a Food Pyramid
Moving Good Fats from Fish to Mice
A Taste for Cheese
GSAT English Rules
Whoever vs. Whomever
Who vs. Whom
Problems with Prepositions
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
The Annual GSAT Scholarships
GSAT Scholarship
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Mathematics
GSAT Practice Papers | GSAT Mathematics | Maths
How to Slice a Cake Fairly
Math of the World
Human Body
Running with Sneaker Science
Flu Patrol
Speedy Gene Gives Runners a Boost
Invertebrates
Starfish
Wasps
Lice
Mammals
Bats
Quolls
Elephants
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
Project Music
Electric Backpack
Road Bumps
Plants
Bright Blooms That Glow
White fuzzy mold not as friendly as it looks
The algae invasion
Reptiles
Turtles
Sea Turtles
Copperhead Snakes
Space and Astronomy
Slip-sliding away
Supernovas Shed Light on Dark Energy
Sounds of Titan
Technology and Engineering
Morphing a Wing to Save Fuel
Dancing with Robots
Bionic Bacteria
The Parts of Speech
What is a Preposition?
Problems with Prepositions
What is a Verb?
Transportation
Tinkering With the Basic Bike
Charged cars that would charge
Where rivers run uphill
Weather
Antarctica warms, which threatens penguins
Arctic Melt
Warmest Year on Record
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™