27 Apr '12, 1pm

Mars lava spirals reveal volcanic secrets - Mother Nature Network: Mother Nature NetworkMars lava spirals reveal...

Mars lava spirals reveal volcanic secrets - Mother Nature Network: Mother Nature NetworkMars lava spirals reveal...

GROUNDED: Lava coils on patterned volcanic crust in Cerberus Palus, Mars. (Photo: NASA/JPL/University of Arizona) Giant coils of lava on Mars suggest a mysterious network of valleys on the planet was born from volcanoes, researchers say. The origin of the Athabasca Valles region near the equator of Mars has been debated for more than a decade. Some researchers have proposed that lava once shaped the valleys , while others have thought ice was responsible. The way the ground there is patterned with multisided polygons suggests that either fire or ice could be the culprit — such patterns of cracks might have formed due to seasonal fluctuations in temperature if the surface there was rich in ice, but also might have arose as lava cooled and fractured. Now high-resolution images beamed back by NASA's Mars Reconnaissance Orbiter of the Red Planet have revealed 269 spirals of la...

Full article: http://www.mnn.com/earth-matters/space/stories/mars-lava-...

Tweets

The Secrets of Soil - GreenBuilder #avlgb

The Secrets of Soil - GreenBuilder #avlgb

greenbuildermag.com 27 Apr '12, 12am

Abused, misunderstood, poisoned and taken for granted, soils deserve better. They’re essential to life, more complex than ...

My mother's story - News Of The Day - San Francisco Luxury News

My mother's story - News Of The Day - San Franc...

sfluxe.com 28 Apr '12, 1pm

For Nelofar Currimbhoy, writing about her mother Shahnaz Husain was an emotional and turbulent journey. The mother-daughte...