Our Network Websites:      All India TodayTech Know Bits - Invest In IndiaIndia - Food And Travel GuideHowTo For IndiaCars Of India

Posts Tagged ‘Yahoo News’

Global Warming 'Irreversible' For Next 1000 Years: Study

The Department of Water and Power (DWP) San Fernando Valley Generating Station is seen in Sun Valley, California, 2008. Climate change is “largely irreversible” for the next 1,000 years even if carbon dioxide (CO2) emissions could be abruptly halted, according to a new study led by the US National Oceanic and Atmospheric Administration (NOAA). (AFP/Getty Images/File/David Mcnew)

From Yahoo News/AFP:

WASHINGTON (AFP) – Climate change is “largely irreversible” for the next 1,000 years even if carbon dioxide (CO2) emissions could be abruptly halted, according to a new study led by the US National Oceanic and Atmospheric Administration (NOAA).

The study’s authors said there was “no going back” after the report showed that changes in surface temperature, rainfall and sea level are “largely irreversible for more than 1,000 years after CO2 emissions are completely stopped.”

NOAA senior scientist Susan Solomon said the study, published in this week’s Proceedings of the National Academy of Sciences journal, showed that current human choices on carbon dioxide emissions are set to “irreversibly change the planet.”

Read more ….

Source Of Moon's Magnetism Found


From Yahoo News/Space.com:

Moon rocks delivered to Earth by Apollo astronauts held a mystery that has plagued scientists since the 1970s: Why were the lunar rocks magnetic?

Earth’s rotating, iron core produces the planet’s magnetic field. But the moon does not have such a setup.

Now, scientists at MIT think they have a solution. Some 4.2 billion years ago, the moon had a liquid core with a dynamo (like Earth’s core today) that produced a strong magnetic field. The moon’s magnetic field would have been about 1-50th as strong as Earth’s is today, the researchers say.

Read more ….

Heavy Rains Damage Peru's Nazca Lines


From Yahoo News/AP:

LIMA, Peru – Heavy rains have damaged part of one of Peru’s top tourist destination, depositing clay and sand on mysterious figures etched in the desert sand by indigenous groups centuries ago, an archaeologist said Monday.

The rains, which are uncommon on Peru’s dry coastal desert, washed off the nearby Panamerican highway and pushed sand on top of three fingers of a geoglyph in the famed Nazca lines, said Mario Olaechea of Peru’s National Culture Institute. The fingers form part of a pair of hands.

Olaechea told The Associated Press that the damage is minor and the institute plans to clear the material and restore the geoglyph.

Read more ….

Saturday Night Special: Biggest Full Moon of 2009


From Yahoo News/Space:

If skies are clear Saturday, go out at sunset and look for the giant moon rising in the east. It will be the biggest and brightest one of 2009, sure to wow even seasoned observers.

Earth, the moon and the sun are all bound together by gravity, which keeps us going around the sun and keeps the moon going around us as it goes through phases. The moon makes a trip around Earth every 29.5 days.

But the orbit is not a perfect circle. One portion is about 31,000 miles (50,000 km) closer to our planet than the farthest part, so the moon’s apparent size in the sky changes. Saturday night (Jan. 10) the moon will be at perigee, the closest point to us on this orbit.

It will appear about 14 percent bigger in our sky and 30 percent brighter than some other full moons during 2009, according to NASA. (A similar setup occurred in December, making that month’s full moon the largest of 2008.)

Read more
….

U.S. Scientists Learn How To Levitate Tiny Objects

Photo: An artist’s rendition shows how the repulsive Casimir-Lifshitz force between suitable materials in a fluid can be used to quantum mechanically levitate a small object of density greater than the liquid. (Courtesy of the lab of Federico Capasso, Harvard School of Engineering and Applied Sciences/Handout/Reuters)

From Yahoo News/Reuters:

CHICAGO (Reuters) – U.S. scientists have found a way to levitate the very smallest objects using the strange forces of quantum mechanics, and said on Wednesday they might use it to help make tiny nanotechnology machines.

They said they had detected and measured a force that comes into play at the molecular level using certain combinations of molecules that repel one another.

The repulsion can be used to hold molecules aloft, in essence levitating them, creating virtually friction-free parts for tiny devices, the researchers said.

Federico Capasso, an applied physicist at Harvard University in Massachusetts, whose study appears in the journal Nature, said he believed that detection of this force opened the possibility of a whole new class of tiny gadgets.

Read more
….

Researchers Unlock Secrets Of 1918 Flu Pandemic

Policemen in Seattle wearing masks made by the Red Cross, during the influenza epidemic in a National Archives photo dated December 1918. (National Archives/Handout/Reuters)

From Yahoo News/Reuters:

WASHINGTON (Reuters) – Researchers have found out what made the 1918 flu pandemic so deadly — a group of three genes that lets the virus invade the lungs and cause pneumonia.

They mixed samples of the 1918 influenza strain with modern seasonal flu viruses to find the three genes and said their study might help in the development of new flu drugs.

The discovery, published in Tuesday’s issue of the Proceedings of the National Academy of Sciences, could also point to mutations that might turn ordinary flu into a dangerous pandemic strain.

Yoshihiro Kawaoka of the University of Wisconsin and colleagues at the Universities of Kobe and Tokyo in Japan used ferrets, which develop flu in ways very similar to humans.

Read more ….

Natural Disasters 'Killed Over 220,000' In 2008

From Yahoo News/AFP:

BERLIN (AFP) – Natural disasters killed over 220,000 people in 2008, making it one of the most devastating years on record and underlining the need for a global climate deal, the world’s number two reinsurer said Monday.

Although the number of natural disasters was lower than in 2007, the catastrophes that occurred proved to be more destructive in terms of the number of victims and the financial cost of the damage caused, Germany-based Munich Re said in its annual assessment.

“This continues the long-term trend we have been observing. Climate change has already started and is very probably contributing to increasingly frequent weather extremes and ensuing natural catastrophes,” Munich Re board member Torsten Jeworrek said.

Read more ….

2009 To Arrive Not A Second Too Soon

From Yahoo News/Space:

Wait a second. The start of next year will be delayed by circumstances beyond everyone’s control. Time will stand still for one second on New Year’s Eve, as we ring in the New Year on that Wednesday night. As a result, you’ll have an extra second to celebrate because a “Leap Second” will be added to 2008 to let a lagging Earth catch up to super-accurate clocks.

By international agreement, the world’s timekeepers, in order to keep their official atomic clocks in step with the world’s irregular but gradually slowing rotation, have decreed that a Leap Second be inserted between 2008 and 2009.

The extra second, ordered by the world’s nominal timekeeper, the International Earth Rotation and Reference Systems Service, will be marked officially at the stroke of midnight on Wednesday in Greenwich, England, the home of what is popularly known as Greenwich Mean Time (GMT) – Coordinated Universal Time (UTC) to the more technically inclined – the standard time for the planet.

Read more ….

Scientists Seek Ways To Ward Off Killer Asteroids

Artist’s rendition released by NASA shows an asteroid belt in orbit around a star. Between 500 and 1,000 massive asteroids cross the Earth’s path regularly and any one of them could cause a global catastrophe, space experts warned Tuesday, urging quick preventive measures. (AFP/NASA-HO/File)

From Yahoo News/McClatchy:

WASHINGTON — A blue-ribbon panel of scientists is trying to determine the best way to detect and ward off any wandering space rocks that might be on a collision course with Earth.

“We’re looking for the killer asteroid,” James Heasley , of the University of Hawaii’s Institute for Astronomy , last week told the committee that the National Academy of Sciences created at Congress’ request.

Congress asked the academy to conduct the study after astronomers were unable to eliminate an extremely slight chance that an asteroid called Apophis will slam into Earth with devastating effect in 2036.

Read more ….

Obama Names 4 Top Members Of Science Team

In this Oct. 17, 2007 file photo, John Holdren, professor of Environmental Science and Public Policy in the Department of Earth and Planetary Sciences at Harvard University, speaks at the Carnegie Medal of Philanthropy presentations in Pittsburgh. (AP Photo/Keith Srakocic, File)

From Yahoo News/AP:

WASHINGTON – President-elect Barack Obama’s selection Saturday of a Harvard physicist and a marine biologist for science posts is a sign he plans a more aggressive response to global warming than did the Bush administration.

John Holdren and Jane Lubchenco are leading experts on climate change who have advocated forceful government action. Holdren will become Obama’s science adviser as director of the White House Office of Science and Technology Policy. Lubchenco will lead the National Oceanic and Atmospheric Administration, which oversees ocean and atmospheric studies and does much of the government’s research on global warming.

Read more ….