colleen muska

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Evidence of liquid water found on Mars

<b>Nasa's Curiosity rover has found that water can exist as a liquid near the Martian surface.</b><p>Mars should be too cold to support liquid water at the surface, but salts in the soil lower its freezing point - allowing briny films to form.<p>The results lend credence to a theory that dark streaks seen on …

Geoscience

Arc to Arcturus, spike to Spica

Tonight, look outside in the evening and learn a phrase useful to sky watchers. The phrase is: <i>follow the arc to Arcturus, and drive a spike (or speed</i> …

Girl's skeleton found in cave sheds light on origins of first Americans

The remains of a small, delicate teenage girl who fell to her death in an underground cave system in Mexico 12,000 years ago have thrown fresh light on the origins of the first Americans.<p>Cave divers chanced upon the girl's skeleton, along with the bones of sabre-tooth cats, giant ground sloths and …

46 Things I Learned Making Mister Rogers & Me

I only knew three things about Mister Rogers before meeting him: He was the host of one of my favorite childhood shows, <i>Mister Rogers' Neighborhood</i>, …

Your Next Cooking Oil Could Come From Hemp

A new strain of hemp produces oil with all the qualities needed for fine frying.<p>Agricultural hemp produces strong and decay-resistant fibers, a versatile oil, and requires little in the way of herbicides, since it outcompetes weeds. Hemp oil isn't widely used for cooking, though, partially because …

Milky Way and Venus

Planet Venus rising in the east before dawn on February 4 by Mike Taylor Photography.<p>The planet Venus is now nearly at its brightest for this morning …

Disappearance of wildflowers may have doomed Ice Age giants

WASHINGTON (Reuters) - Flower power may have meant the difference between life and death for some of the extinct giants of the Ice Age, including the mighty woolly mammoth and woolly rhinoceros.<p>A Mammoth tusk extracted from ice complex deposits along the Logata River in Taimyr, Russia, is shown in …

Watch The Creationism Vs. Evolution Debate: Ken Ham And Bill Nye

Does it damage children to teach them biblical creationism? What are the costs of denying evolution, one of biology's core tenets?<p>Those questions were asked Tuesday night, in a live debate between best-selling Christian author Ken Ham and Emmy Award-winning educator Bill Nye ("the Science Guy") at …

APOD: NGC 2683: Edge-On Spiral Galaxy (2014 Feb 05) Image Credit: Subaru Telescope (NAOJ), Hubble Space Telescope; Image Assembly, Processing, & Copyright: Robert Gendler http://apod.nasa.gov/apod/ap140205.html Explanation: Does spiral galaxy NGC 2683 have a bar across its center? Being so nearly like our own barred Milky Way Galaxy, one might guess it has. Being so nearly edge-on, however, it is hard to tell. Either way, this gorgeous island universe, cataloged as NGC 2683, lies a mere 20 million light-years distant in the northern constellation of the Cat (Lynx). NGC 2683 is seen nearly edge-on in this cosmic vista combining data and images from the ground-based Subaru telescope and the space-based Hubble Space Telescope. More distant galaxies are seen scattered in the background. Blended light from a large population of old yellowish stars forms the remarkably bright galactic core. Starlight silhouettes the dust lanes along winding spiral arms, dotted with the telltale blue glow of young star clusters in this galaxy's star forming regions. http://www.naoj.org/ http://hla.stsci.edu/ http://www.robgendlerastropics.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140205 #APOD

Q&A: The Engineer Who Wants To Power The World With Carbs

Visions of a sweet future<p>You might like carbs, but probably not in the way Percival Zhang does. Zhang, a chemical engineer at Virginia Tech, runs a lab that's dedicated to converting carbohydrates into electricity. The lab's inventions include proofs of concepts showing that carbohydrates are able …

January's Epidemic: 11 School Shootings in 19 Days

This article is from the archive of our partner .<p>January 2014 is threatening to become the month when gun violence became a matter of routine in …

Why Are These Stars Fleeing The Milky Way?

A new class of speedy rogue stars are accelerated by an unknown force.<p>Astronomers have discovered a new class of potential hypervelocity stars that could suggest an alternative escape route from the galaxy.<p>Hypervelocity stars are so called because, uh, they travel really fast—enough to break free …

Found: The Real Town of ‘Bedrock’

Nobody pretends we know everything about the people of the Stone Age, but a few things are settled. They definitely didn’t drive cars powered by …

Hear the sound of the Earth moving from the deepest hole on the planet

For billions of years, the Earth has silently traveled through space, spinning around the sun without making a sound. Even here on the planet, there's been little to hear. But now with the right recording equipment and processing, we can get a sense of what it sounds like for the planet to spin and …

North Dakota Derailment Shows Dark Side of America’s Oil Boom

Here’s the good news about Monday’s massive train accident in North Dakota: it looks like no one was hurt. And that might seem amazing after seeing …

Neanderthals Were Neat Freaks: Inside the Original Man Caves

Free-association test: in the old sitcom “The Odd Couple,” Felix was the fussy neat freak who sipped wine, listened to opera and straightened up …

Discovery of oldest human DNA in Spanish cave sheds light on evolution

Researchers have read strands of ancient DNA teased from the thigh bone of an early human who died 400,000 years ago in what is now northern Spain.<p>The genetic material was pieced together from a clutch of cells found in bone fragments – the oldest human remains ever to yield their genetic code.<p>The …

NASA Detects Water on Five Planets

NASA’s Hubble Telescope has discovered signs of water vapor on five Jupiter-sized planets outside the solar system.<p>But the fiery planets are not …

Congressional hearing on search for extraterrestrial life – live updates

Summary<p><b>The hearing has wrapped.</b> No conclusive evidence as to the existence or not of extraterrestrial life emerged today on Capitol Hill. But as multiple committee members were at pains to mention, the hearing was more fun and informative than the usual fare. Here's a summary of where things</b> …

Cassiopeia to Andromeda galaxy

Tonight … find the Andromeda galaxy, the next-nearest spiral galaxy to our Milky Way. Be sure to look at early evening, before the moon rises into …

10 Scientific Blunders That Could Shake Your Faith in Science

The history of science teaches us to question what we think we know.<p>Some scientists who made great discoveries in history were ridiculed and …

APOD: Comet Hale-Bopp Over Indian Cove (2013 Nov 24) Image Credit & Copyright: Wally Pacholka (Astropics, TWAN) http://apod.nasa.gov/apod/ap131124.html Explanation: Comet Hale-Bopp, the Great Comet of 1997, was quite a sight. In the above photograph taken on 1997 April 6, Comet Hale-Bopp was imaged from the Indian Cove Campground in the Joshua Tree National Park in California, USA. A flashlight was used to momentarily illuminate foreground rocks in this six minute exposure. An impressive blue ion tail was visible above a sunlight-reflecting white dust tail. Comet Hale-Bopp remained visible to the unaided eye for over a year before returning to the outer Solar System and fading. As Comet ISON approaches the Sun this week, sky enthusiasts around the Earth are waiting to see if its tails will become even more spectacular than those displayed by Comet Hale-Bopp. http://www.astropics.com/ http://twanight.org/Pacholka Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=131124 #APOD

How the visual language of comics could have its roots in the ice age

Neil Cohn's love of comic strips began in his family's attic. In one of his earliest memories, he recalls his dad climbing the stairs and pulling down a box of 1960s <i>Batman</i> and <i>Superman</i> books that he had stashed away from his own childhood. To Cohn's four-year-old self, it was as if they'd been …