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Alexa123

DIY

Homemade Titanium

By Theodore Gray Posted on 4.9.2009 11 Comments
An iron crowbar costs about $8; one made of titanium, $80. Solid-titanium scissors start at $700, and don't even ask about the titanium socket wrench. Titanium must be a rare and precious substance, right? Actually, as raw ore, titanium is 100 times as abundant as copper. Nearly all white paint is white because of the titanium dioxide found in the ore. Something like four million tons a year go into paint, sunscreen, toothpaste, even paper.

10.21.2009 at 04:33pm - Comment by Alexa123

When I read this, I found myself wondering if the aluminum yielded would be useful for another Gray Matter in which he etches a cube of the metal with acid to reveal the crystals - its worth thinking about. www.voucher-code-discount.co.uk
The Environment

Comic: Baked Alaska

By Posted on 4.27.2009 10 Comments
Gas hydrates could produce more energy than all other fossil fuels combined. Alaska's got a giant stash of this alternative energy source beneath its north slope. Check out this comic to get the inside scoop.

6.8.2009 at 09:36pm - Comment by Alexa123

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The Environment

The Greening of Fresh Kills: In Graphic Exposition

By Molika Ashford Posted on 2.10.2009 1 Comments
This spring the New York City Department of Parks and Recreation released the draft environmental impact statement for the Fresh Kills Park Project, their plan to turn the Fresh Kills landfill—hitherto best known as a smelly Staten Island mountain—into a world class public park. The statement will be discussed at an open public hearing on September 4th, 2008, and work begins next year on the project's first small section—wrapping around the landfill's north mound and reaching down to the waterfront. This sliver should be finished within a few years, though the park in its entirety is expected to take around 30 years to complete, with $198 million in initial funding, but much more needed along the line. Next: "New Yorkers filled Staten Island's Fresh Kills landfill for 50 years..."

6.8.2009 at 09:35pm - Comment by Alexa123

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Cars

Overachievers We Love

By Posted on 12.8.2008 3 Comments
Popular Science celebrates the eternal human urge to go bigger! Better! Farther! Inside, a look at three vehicles with the need to exceed.

6.8.2009 at 09:35pm - Comment by Alexa123

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Cars

Return of the Bodacious 'Bots

By Julia Wallace Posted on 12.22.2008 7 Comments
It's the ultimate geek fantasy: a metal-and-plastic woman of your own, brought alive by technology (the geek's own stock-in-trade), who somehow becomes hopelessly devoted to you. In both science and science fiction, the creation of female robots has tended to revolve around a housekeeper-whore dichotomy: the fembot is either a docile domestic helper, or a sexually uncontrolled, well, sex machine. Historically, she has simultaneously embodied men’s deep desire for idealized domestic companionship and their fears of being destroyed by unbridled female sexuality.

6.8.2009 at 09:34pm - Comment by Alexa123

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The Environment

pH Down, Noise Up

By Laurie J. Schmidt Posted on 10.1.2008 6 Comments
As increased levels of atmospheric carbon dioxide (CO₂) dissolve in the Earth's oceans, seawater is becoming warmer and more acidic. Now, a new study concludes that one result of more acidic seas is that sounds will travel farther underwater. A corresponding increase in background noise in the oceans could affect the behavior of marine mammals, a team of scientists at the Monterey Bay Aquarium Research Institute (MBARI) says.

6.8.2009 at 09:34pm - Comment by Alexa123

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PPX

Year-End Payouts Under Way

By Posted on 1.14.2009 9 Comments
Thanks for your patience, PPXers, as we make our way through the many year-end payouts on those halted 12/31 and 1/1 stocks. Read on for the reasoning behind some of those that have paid out thus far. Please always feel free to email with questions, suggestions, and tips, too: taylor.hengen@bonniercorp.com BLURAY: Short Blu Ray is doing well, but not quite well enough to meet the prop payout criteria of populating 14.4 million US homes. 10.7 Million sure ain’t bad, though.

6.8.2009 at 09:33pm - Comment by Alexa123

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Technology

Are Aliens Out There? Left- and Right-Handed Molecules May Hold the Answer

By Christine Cyr Posted on 5.4.2009 3 Comments
Proving that life exists on distant planets may seem a near impossibility, but researchers at the National Institute of Standards and Technology (NIST) have a theory that may shed light (literally!) on the age-old question. They’d like to launch an instrument into space that could detect the “chirality”—or handedness—of the light from molecules on other planets.

6.8.2009 at 09:32pm - Comment by Alexa123

This is a fascinating development. Chiral theory is in its infancy but it is definitely worth a shot on this. save money with http://www.sharevouchers.co.uk Discount Vouchers
DIY

Running Against the Wind

By Posted on 2.12.2009 13 Comments
In summer 2007, Alexander Miller and Jan Lehmann, aerospace-engineering students at Stuttgart University in Germany, took on an unusual task: building a wind-powered vehicle that could race directly into the wind. A year later, their team unveiled its creation, the Ventomobile, which handily defeated the field at North Holland's Racing Aeolus, the first-ever track race between vehicles powered solely by wind.

6.8.2009 at 09:30pm - Comment by Alexa123

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Gadgets

The Meanest Drill

By Chuck Cage Posted on 3.20.2009 5 Comments
Standard drills will barely make a chip in concrete or brick. That’s why contractors drilling holes in a home’s foundation use rotary hammer drills like this new Hitachi DH50MRY. In addition to the standard spinning bit, it slams a weight—the hammer—forward to create a sort of jackhammer effect to crush masonry as it drills. But all that pounding beats the heck out of your hands and arms. The Hitachi is one of the first to integrate a counterweight to absorb recoil. The result is a safer and easier-to-control drill that’s still concrete’s worst nightmare.

6.8.2009 at 09:29pm - Comment by Alexa123

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