Archive for the ‘Science’ Category

DNA analysis may be done on Mars for first time

Monday, April 20th, 2009

dn16933-1_300In August 1996, molecular biologist Gary Ruvkun was about to reveal one of the biggest discoveries of his scientific career. His lab at Harvard Medical School had recently found a gene called age-1 that determines lifespan in roundworms. Their work offered the tantalising possibility that tinkering with molecular pathways might extend the lifespan of other organisms – and perhaps even humans.

Harvard sent out a press release and Ruvkun prepared for an onslaught of media attention. But it never came. Two days before his team’s paper came out, scientists analysing a meteorite from Mars called ALH84001 made headlines worldwide. Then-US president Bill Clinton even got in on the announcement.

“My grad student leans in the door and says, ‘They’ve just announced life on Mars,’” recalls Ruvkun. “That would really f— us,” Ruvkun replied, thinking his student was joking.
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Kids Curb Marital Satisfaction

Saturday, April 18th, 2009

Parents all know that children make it harder to do some of the most enjoyable adult things. Bluntly put, kids can get between you.

Now scientists have attached some numbers to the situation.

An eight-year study of 218 couples found 90 percent experienced a decrease in marital satisfaction once the first child was born.

“Couples who do not have children also show diminished marital quality over time,” says Scott Stanley, research professor of psychology at University of Denver. “However, having a baby accelerates the deterioration, especially seen during periods of adjustment right after the birth of a child.”
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Railroad Stimulus: How to Spend $14 Billion to Improve U.S. Rail

Thursday, April 16th, 2009

February’s economic stimulus bill contained money for weatherizing houses, the expansion of rural broadband, improving the grid and upgrading the U.S. transportation infrastructure. For this last category, some money for highway and bridge construction has been spent, but what of the money for rail? The bill set aside $1.3 billion specifically for Amtrak and $8 billion for high-speed rail, with $5 billion more in the President’s proposed budget. Rail is energy-efficient, environmentally sound and, if properly implemented, cheap. There are many ways to improve the country’s passenger-rail network—from new high-speed designs to simple commuter efficiencies, investing in pricey maglev technology or improving signals on old lines. With $14 billion plus in hand, experts agree that to get more people off the roads and onto trains, the government must pick and choose projects wisely.
By S.E. Kramer
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Scientists pinpoint the ‘edge of space’

Monday, April 13th, 2009

Canadian technology on NASA mission is a prototype for future, longer mission
Where does space begin? Scientists at the University of Calgary have created a new instrument that is able to track the transition between the relatively gentle winds of Earth’s atmosphere and the more violent flows of charged particles in space – flows that can reach speeds well over 1000 km/hr. And they have accomplished this in unprecedented detail.

Data received from the U of C-designed instrument sent to space on a NASA launch from Alaska about two years ago was able to help pinpoint the so-called edge of space: the boundary between the Earth’s atmosphere and outer space.
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Pollution link with birth weight

Sunday, April 12th, 2009

Exposure to traffic pollution could affect the development of babies in the womb, US researchers have warned.

They found the higher a mother’s level of exposure in early and late pregnancy, the more likely it was that the baby would not grow properly.

The study, published in the Journal of Epidemiology and Community Health, looked at 336,000 babies born in New Jersey between 1999 and 2003

UK experts said much more detailed research into a link was needed.
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Nobody listens to the real climate change experts

Monday, March 16th, 2009

Considering how the fear of global warming is inspiring the world’s politicians to put forward the most costly and economically damaging package of measures ever imposed on mankind, it is obviously important that we can trust the basis on which all this is being proposed. Last week two international conferences addressed this issue and the contrast between them could not have been starker.

The first in Copenhagen, billed as “an emergency summit on climate change” and attracting acres of worldwide media coverage, was explicitly designed to stoke up the fear of global warming to an unprecedented pitch. As one of the organisers put it, “this is not a regular scientific conference: this is a deliberate attempt to influence policy”.
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New organic material may speed Internet access

Monday, March 16th, 2009

The next time an overnight snow begins to fall, take two bricks and place them side by side a few inches apart in your yard.

In the morning, the bricks will be covered with snow and barely discernible. The snowflakes will have filled every vacant space between and around the bricks.

What you will see, says Ivan Biaggio, resembles a phenomenon that, when it occurs at the smallest of scales on an integrated optical circuit, could hasten the day when the Internet works at superfast speeds.

Biaggio, an associate professor of physics at Lehigh University, is part of an international team of researchers that has developed an organic material with an unprecedented combination of high optical quality and strong ability to mediate light-light interaction and has engineered the integration of this material with silicon technology so it can be used in optical telecommunication devices.

A description of this material was published on the Nature Photonics Web site March 15.
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Pluto a Planet Again, in Illinois

Thursday, March 12th, 2009

It took about three minutes for members of the Illinois state senate to make the unanimous vote: “that March 13, 2009, be declared ‘Pluto Day’ in the State of Illinois in honor of the date its discovery was announced in 1930.”

Quietly adopted on February 26, the state resolution is meant to honor Pluto discoverer Clyde Tombaugh, who was born and raised in the farming village of Streator.
“This is one of those things that the village is very proud of,” said Illinois State Senator Gary Dahl, who sponsored the resolution.

“I don’t think we are changing the status of the planet. We’re simply asking that March 13 be declared Pluto Day and that, for the day, Pluto is a planet.”
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Nuclear waste has no place to go

Thursday, March 12th, 2009

Obama budget kills Nevada storage site for used radioactive fuel rods piling up near power plants
In a pool of water just a football field away from Lake Michigan, about 1,000 tons of highly radioactive fuel from the scuttled Zion Nuclear Power Station is waiting for someplace else to spend a few thousand years.

The wait just got longer.

President Barack Obama’s proposed budget all but kills the Yucca Mountain project, the controversial site where the U.S. nuclear industry’s spent fuel rods were supposed to end up in permanent storage deep below the Nevada desert. There are no other plans in the works, meaning the waste for now will remain next to Zion and 104 other reactors scattered across the country.

Obama has said too many questions remain about whether storing waste at Yucca Mountain is safe, and his decision fulfills a campaign promise. But it also renews nagging questions about what to do with the radioactive waste steadily accumulating in 35 states
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Stern: Climate change deniers are ‘flat-earthers’

Wednesday, March 11th, 2009

Economist Nicholas Stern warns of ‘absolute lunacy’ of do-nothing approach of Czech president Václav Klaus and fellow climate change sceptics
Climate change deniers are “ridiculous” and akin to “flat-earthers”, according to Sir Nicholas Stern, who advised the government about the economic threat posed by global warming. The respected economist compared climate naysayers to those who deny the link between smoking and cancer or HIV and Aids in the face of mounting scientific evidence.

Stern — who prepared his influential report to the UK Treasury in 2007 at Gordon Brown’s request — said the evidence that human-induced climate change was occurring was “crystal clear”.

“If you look at all the serious scientists in the world, there is no big disagreement on the basics of this … it would be absolute lunacy to act as if climate change is not occurring,” he said.
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A Green Pimp My Ride: Ree-V Converts Cars to Electric

Wednesday, March 11th, 2009

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If you want your car converted to run on biodiesel or vegetable oil, there are plenty of places to turn–conversion kits are available for the DIY crowd, and the less mechanically-inclined can have professionals give their car biodiesel capability. But what if you want an electric car?

A Colorado company called Ree-V has stepped in to fill that niche by providing full-service electric car conversions. And while companies like Toyota, GM, and Ford have announced intentions to release PHEV (plug-in hybrid electric vehicle) models, a conversion could cost significantly less.

Conversions to a lead-acid battery cost a pretty penny–between $17,500 and $200,000. And most converted cars are only suitable for quick trips around town. Ree-V’s 1995 Geo Metro conversion, for example, has a top speed of 70 MPH and a range of 25-35 miles.
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Fish with human faces spotted in South Korea

Wednesday, March 4th, 2009

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The “humanoid” carp are attracting attention in the town of Chongju in the centre of the country where they live in a small pond.

They are believed to be hybrid descendants of two carp species – the carp and the leather carp, also known as a tangerine fish.

Both fish are females and more than three feet long. They appear to have distinctive human noses, eyes and lips.
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Solar Panel Drops to $1 per Watt: Is this a Milestone or the Bottom for Silicon-Based Panels?

Sunday, March 1st, 2009

A solar power milestone was reached on Tuesday when First Solar Inc brought its manufacturing costs for solar panels down to $1 per watt. But a study from the University of California and Lawrence Berkeley National Labs suggests that this might be the bottom for a price-point—if solar power is ever going to scale up to become competitive with other forms of energy. Here are the new challenges facing the solar industry and some suggestions to make a brighter future.
A long-sought solar milestone was eclipsed on Tuesday, when Tempe, Ariz.–based First Solar Inc. announced that the manufacturing costs for its thin-film photovoltaic panels had dipped below $1 per watt for the first time. With comparable costs for standard silicon panels still hovering in the $3 range, it’s tempting to conclude that First Solar’s cadmium telluride (CdTe) technology has won the race. But if we’re concerned about the big picture (scaling up solar until it’s a cheap and ubiquitous antidote to global warming and foreign oil) a forthcoming study from the University of California–Berkeley and Lawrence Berkeley National Laboratory suggests that neither material has what it takes compared to lesser-known alternatives such as—we’re not kidding—fool’s gold.
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