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Aerostats in 1912: A Look in Scientific American’s Archives [Slide Show]

In 1912 airships and balloons, powered and unpowered, were being developed to explore, to entertain, to travel, and to wage war. Aerostats (any lighter-than-air craft) remained highly sensitive to weather and many were floated by flammable hydrogen (at least until the destruction of the Hindenburg in May 1937) but despite the limitations, great hopes were placed on these frail craft. [More]

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Ponytail Physics: How Competing Forces Shape Bundles of Hair

Ponytails in motion. Credit: Mike Adams/Flickr via Creative Commons BOSTON At long last, one of the hairiest problems in modern physics has been solved. Researchers have devised a theoretical model to describe the shape of a ponytail.

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Mars Swings Into Opposition March 3

Now's a great time to break out that backyard telescope. Because Saturday, March 3, is the Mars Opposition . It's one of the times that the Earth and Mars pass the closest to one another

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The Risks and Benefits of Mutant Flu Studies

By Ed Yong of Nature magazine Two teams of scientists, led by Ron Fouchier of Erasmus Medical Center in Rotterdam, the Netherlands, and Yoshihiro Kawaoka of the University of Wisconsin-Madison, have created mutant strains of H5N1 avian influenza. [More]

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Tar Sand Companies Aim to Reduce Greenhouse Gas Emissions

The world's largest oil sands producers signed an agreement yesterday to waive their intellectual property and patent rights in order to reduce the industry's impact on greenhouse gases, agriculture and waterways. [More]

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Earth Formed from Diverse Meteorite Mix

Earth's building blocks were more eclectic than once thought, according to a new study suggesting our planet formed from collisions of many different types of meteorites.

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