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Prehistoric warming linked to CO2

A study of 20,000- to 10,000-year-old?Antarctic ice indicates that a rise in temperatures was driven by natural carbon dioxide emissions. ??

By Tia Ghose,?LiveScience Staff Writer / February 28, 2013

A section of an Antarctic ice core shown under polarized light reveals the individual ice crystals.

Fr?d?ric Parrenin

Enlarge

Rising carbon dioxide levels may have caused Antarctic warming in the past, new research strongly suggests.

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The findings, published today (Feb. 28) in the journal Science, just add to the body of evidence that human-caused greenhouse gas emissions will lead to?climate change.

"It's new evidence from the past of the strong role of CO2 [carbon dioxide] in climate variation," said study co-author Fr?d?ric Parrenin, a climate scientist at the CNRS in France.

Past data

Eons of the Earth's climate history are revealed deep within ice sheets in the Arctic and Antarctic. The?Antarctic ice?traps gas bubbles from the climate that can reveal what the ancient atmosphere looked like, while the ice itself can reveal historical temperatures.

But gas bubbles from a given period get buried deeper than ice of the same period, making it hard to tie past temperatures with atmospheric changes.

In the past, scientists using older techniques found that increases in carbon dioxide happened after global warming, not the reverse. [Images of Melt: Earth's Vanishing Ice]

Past link

But Parrenin and his colleagues wondered whether that was actually the case. To answer that question, the team looked at five ice cores that had been drilled from?Antarctica?over the last 30 years.

They focused on ice from 20,000 to 10,000 years ago, which encompassed the last period when the planet warmed naturally and glaciers melted.

The team measured the concentration of nitrogen-15 isotopes, or atoms of the same element with different weights, at different depths throughout the?ice cores. They compared the depth of that isotope with the ice composition for all the cores to determine the distance between ice bubbles and ice from the same period.

Global warming

The team found that global warming and a carbon dioxide increase happened at virtually the same time ? between 18,000 and 11,000 years ago.

"It makes it possible that CO2 was the cause ? at least partly ? of the temperature increase during the courses of the last glaciation," Parrenin told LiveScience.

And if increased carbon dioxide could lead to?rising temperatures?in the past, it also can in the present day, he said.

The findings may deflate some?climate skeptics, who used the poor dating of ice cores to question the link between carbon dioxide and warming, said Robert Mulvaney, a glaciologist with the British Antarctic Survey, who was not involved in the study.

It also confirmed the view of most climate scientists that in the past, rising temperatures and carbon dioxide were locked in a feedback loop, where high temperatures led to more carbon dioxide being released from the deep oceans, which increased temperatures further, Mulvaney said.

But because predictions of future warming are based on recent carbon dioxide and temperature data, not historical models, "it hasn't really changed anything about our understanding of how climate change will change our modern environment." Mulvaney told LiveScience.

Follow Tia Ghose on Twitter?@tiaghose?or LiveScience?@livescience. We're also on?Facebook?&?Google+.?

Source: http://rss.csmonitor.com/~r/feeds/science/~3/FiFotxCyB74/Prehistoric-warming-linked-to-CO2

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Hagel: budget cuts won't erode US military power (The Arizona Republic)

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DNR's UP Fishing Report | Sports & Recreation | UP Michigan News

Slush has become an issue on most of the inland lakes.

Lake Gogebic: Had good walleye fishing with many legal size fish caught. Anglers are using tip-ups or jigging rapalas in 10 to 18 feet of water. Perch action was fair with wigglers in 12 to 17 feet.

Lac Vieux Desert: Has some areas with deep slush so be careful as you travel out on the lake. Access may be difficult at the Misery Bay landing due to deep snow. Ice anglers have done well for bluegill and crappie over the last few weeks. Bluegills were hitting on wax worms in 6 feet of water in Rice Bay. The bigger perch were hard to find along the west side of the lake however those willing to put in the time did take enough for a meal. Walleye were still hard to come by but the few that were caught were taken at sun up or sundown. Those targeting pike have caught good numbers of smaller fish but a few were over 30 inches.

Chicagon Lake: Catch rates were slow. A few walleye were taken on tip-ups with sucker minnows right before and right after dark in 10 to 15 feet of water. Perch were small but a few averaged nine inches. Bluegills were now hitting wigglers and wax worms in 10 to 17 feet of water. Whitefish action was slow with only a few fish taken in 40 to 50 feet. Slush is bad in some places so use caution when heading out.

Iron Lake: Bluegills are hitting on small jigs tipped with wax worms but many are small. Crappie fishing is fair for those using minnows just before dark. Pike action remains steady but many were small.

Groveland Mine Ponds: The lakes had a lot of fresh snow with water and slush under it and that makes travel more difficult. Island Lake was producing small bluegills while West Lake was giving up bluegills and yellow perch for those using tip-ups or jigging with minnows and wax worms. Few anglers were out on East Lake or South Lake.

Lake Antoine: Still has ice but drifting snow made it difficult for anglers to get to their ice shanties. A few panfish were caught by those jigging minnows and wax worms.

Little Bay De Noc: Ice conditions remain favorable however travel in some areas is difficult with a foot or more of snow. Anglers were moving ice shanties closer to shore. Walleye catches were fair to good. The better fishing was near the Center and Third Reefs when using tip-ups with sucker minnows in 12 to 20 feet of water or near Garth Point in eight to 17 feet. The walleye appear to be staging for spawning. Jumbo perch were caught just south of the ?Narrows? when jigging wigglers in 30 feet of water. Good catches of smaller perch were reported near Kipling in five to 17 feet. Good whitefish action off Sand Point for those jigging dead minnows in 75 to 85 feet. Good pike action near the mouth of the Escanaba Yacht Harbor with tip-ups and sucker minnows along the break.

Munising: Still had fishable ice between Christmas and Sand Point. Some areas have up to a foot of snow and slush which makes travel on the ice a challenge. Catch rates were slow for whitefish. Most were jigging a single egg or wax worm. Splake were scattered. A few perch were caught at Sand Point but most were seven to eight inches. Those trying for lake trout in the West Channel reported no fish. Reports of smelt were beginning to trickle in.

Munuscong Bay: Was slow for perch and walleye.

Cedarville and Hessel: For perch, anglers are fishing 10 feet of water using wigglers, wax worms and minnows.

Source: http://upmichigan.wdio.com/news/sports-recreation/53573-dnrs-fishing-report

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PHOTOS: Hot Hollywood Couples!

Andrew Garfield and Emma Stone hold hands in NYC! Check out more pics of Hollywood's tightest twosomes

Source: http://www.ivillage.com/star-snapshots-celebrity-couples-photos-2012/1-b-469173?dst=iv%3AiVillage%3Astar-snapshots-celebrity-couples-photos-2012-469173

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Defense Distributed Prints An AR-15 Receiver That Has Fired More Than 600 Rounds

Defense Distributed, a group run primarily by gunsmith Cody Wilson, has released a video of an AR-15 with a 3D-printed lower receiver firing off over 600 rounds, a unique feat in the realm of 3D-printed parts. The part, called the AR Lower V5, worked nearly perfectly while firing 600 rounds and, as Wilson notes, "the test ended when we ran out of ammunition, but this lower could easily withstand 1,000 rounds."

Source: http://feedproxy.google.com/~r/Techcrunch/~3/B-dq0wqBXBs/

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Budget cuts likely to be felt on Main Street

Heesun Wee , CNBC ? ? ? 15 hrs.

If mandatory federal spending cuts begin to take effect Friday, small companies are likely to experience a negative ripple effect of a slowdown in business.

The budget cuts, also known as sequestration, would hit domestic programs that fill every corner of the U.S. economy ? military spending, aviation, and education programs for low-income families. But unlike larger private-sector businesses, smaller employers usually don't have buffers such as large cash reserves to ride out federal budget cuts. Most smaller firms also can't quickly pivot their business strategies to ride out a rough patch.

"Larger companies have economies of scale these days. They have cash reserves, better access to credit markets. They tend to have more of a multinational presence," said Jared Bernstein, a senior fellow at the Center on Budget and Policy Priorities and former chief economic adviser to Vice President Joseph Biden. "Small firms tend to be less insulated from this kind of a hit."

Read More:Sequestration ? CNBC Explains

Sequester 'ripple effect' seen
To be clear, the budget cuts are likely to have a rolling, accumulated impact on small business. Companies with U.S. government contracts must decide which workers will likely be laid off as funds to keep them on payroll evaporate.

"The sky isn't going to fall on March 1," Bernstein said.

Other budget experts note that President Barack Obama's state-by-state sequester report includes improbable precision in administration statements about what could happen. "It's not clear who gets hurt by this," Paul Light, a New York University professor who specializes in the federal bureaucracy and budget, told The Associated Press.

Of course, furloughing workers is never good news, and the budget cuts will have consequences.

Unemployment would create a gradual, domino effect on Main Street. "Less income means those workers will not visit the restaurants around the corner, bring dry cleaning to small businesses at the end of the block," said Bernstein. "There's a ripple effect that hits small businesses, as well."

Small employers squeezed
A study released in late 2012 estimates that in 2013 alone, a sequester would put 2.14 million jobs at risk, including about 956,000 small-business jobs. The sequester would cut across all government spending including the Department of Defense, the Federal Aviation Administration, National Aeronautics and Space Administration and National Oceanic and Atmospheric Administration.

The study was conducted by Stephen Fuller, a George Mason University economist, along with analysis from the Aerospace Industries Association, a trade group that represents aerospace and defense manufacturers.

"As contracts are cancelled, re-negotiated, or otherwise reduced, small business leaders will have limited flexibility in adjusting their business model," said Fuller in the study. "While some will seek to diversify, others will just downsize."

Read More: Amid 'Fiscal Cliff' Stalemate, Main Street Deteriorates

Hit to aerospace and defense
Not surprisingly, the nation's aerospace and defense programs are especially vulnerable to budget cuts. And those programs are dependent on small businesses ? often the sole suppliers of key components used to manufacture major weapons, aircraft, spacecraft and satellite systems.

Main Street, Washington disconnect
President Obama is scheduled to meet Friday with top leaders in the House and Senate, several hours past the deadline for averting automatic budget cuts. They'll discuss how to proceed on the divisive tax-and-spending issues.

The Budget Control Act of 2011 mandates about $1 trillion in sequestration budget cuts to the Department of Defense and non-DOD programs over nine years.

Meantime, for many Americans, shouts of sequester sound like politicians fanning the flames of economic doom ? again.

Fred Deluca, the founder of privately held Subway Restaurants, said the government broadly is simply out of touch with small-business owners. Policies including Obamacare discourage entrepreneurship and the American dream of owning your own business, Deluca told CNBC's "Squawk on the Street" Wednesday.

"It's continuously gotten worse because there's more and more regulation. And it's tough for people to get into business, especially small business," he said. "If I started Subway today, Subway would not exist."

Not surprisingly, small-business owners' confidence was virtually flat in January, as entrepreneurs failed to recoup losses sparked by December's scare about the so-called "fiscal cliff."

While a fiscal deal was reached in January on tax increases and spending cuts, benefits have remained elusive for much of Main Street ? a traditional driver of new jobs during past economic downturns.

"The only good news is that it 'budged' up, not down. If small businesses were publicly traded companies, the stock market would be in shambles," said Bill Dunkelberg, chief economist of the National Federation of Independent Business. "While corporate profits are at record levels as a share of (gross domestic product), small businesses are still struggling to turn a profit."

Source: http://www.nbcnews.com/business/budget-cuts-likely-be-felt-main-street-1C8616903

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Seacrest dodges wedding question at 'Idol' event

This image released by Starpix shows Ryan Seacrest during a news conference for "American Idol", Friday, March 1, 2013, to kick of the "Idol Across America," a promotion in New York. (AP Photo/Starpix, Kristina Bumphrey)

NEW YORK (AP) ? Ryan Seacrest can tell you lot about the evolution of "American Idol" over the last twelve seasons, but the host is a bit more reluctant to discuss the evolution of his relationship with actress Julianne Hough.

When asked by The Associated Press if there was a wedding date in his future, Seacrest casually responded: "Are you getting married?"

Seacrest and Hough have been together since the spring of 2010.

After a few playful rounds of "Are you?" banter on the subject, he decided to call it a day.

Seacrest made the comments Friday while promoting "Idol Across America," a relay of the "American Idol" microphone across the country, taking a page from the Olympic torch relay.

As for the prospect of the microphone making it in one piece, Seacrest says if not, "I'm sure there's one in a holster standing by if it breaks."

___

Online:

www.americanidol.com

___

Follow John Carucci at http://www.twitter.com/jacarucci

Associated Press

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