Earths magnetic field helps protect Earth and its organisms. It protects us from harmful particles given off by the sun. Most of the particles are attracted to the north and south magnetic poles. This is where Earths magnetic field is strongest. This is also where relatively few organisms live. Another benefit of Earths magnetic field is its use for navigation. People use compasses to detect Earths magnetic north pole. Knowing this helps them tell direction. Many animals have natural 'compasses' that work just as well. Birds like the garden warbler in Figure 1.36 use Earths magnetic field. They use it to guide their annual migrations. Recent research suggests that warblers and other migrating birds have structures in their eyes. These structures let them see Earths magnetic field as a visual pattern.
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QUESTION: What do birds use to help in migration?

For thousands of years, people have found fossils. The fossils caused curiosity about Earths past. How did these organisms live? What type of world did they live in? Fossils can tell us a lot about Earths history. In ancient times, fossils inspired myths and stories. These stories included tales of monsters and other incredible creatures. What type of creature do you know that could inspire such stories? Of course, dinosaur fossils were once mistaken for dragons bones. Two thousand years ago, people discovered fossils in China. At the time, they were thought to be dragon bones. We know now that these were not bones, but fossils. So what is the difference?
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QUESTION: What did fossils do in ancient times?

Defeated last month for re-election, Gov. Roy Barnes announced Tuesday that he will spend his first six months out of office as an unpaid attorney for the Atlanta Legal Aid Society, where he will represent poor people. "One day I'll probably do some legal work that I will charge a handsome fee for - at least I hope there are those that are still willing to pay," he told reporters. "But for now, I think it is important to fulfill my duty as a lawyer to help those who need it the most, to speak for those who cannot speak for themselves and to defend those whose life and livelihoods depend on it," he said. Previous governors have gone to prestigious law firms, joined corporate boards or returned to thriving businesses. "I don't think I've ever heard of anybody doing this before," Emory University political science professor Merle Black said. "If he's actually going to represent individuals for that organization, they're going to get great representation. You're going to get some powerful legal muscle there," Mr. Black said. Mr. Barnes said he already has his first case, but he wouldn't say what it is. Atlanta Legal Aid provides civil services to poor people in five metro Atlanta counties. Mr. Barnes said he was hoping to send a message to other lawyers. "This privilege to practice law is just that - it's a privilege. And it comes with a cost and it comes with a bill . We as lawyers have a responsibility to make sure that everyone, regardless of whether they can afford it or not, has quality representation. And if we don't do that, then we're not much of a profession," he said. Steven Gottlieb, the society's executive director, said, "I can't imagine anything that could be better than to have the governor of the state, in his first act as a private citizen, donate six months of his time to represent poor people .
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QUESTION: How is Gov. Roy Barnes' career choice different from previous governors?

The 1933 double eagle, a $20 gold piece with a mysterious history that involves a president, a king and a Secret Service sting operation, was auctioned Tuesday last night for a record price for a coin, $7.59 million, nearly double the previous record. The anonymous buyer, believed to be an individual collector who lives in the United States, made the winning bid in a fiercely contested nine-minute auction at Sotheby's in Manhattan. Eight bidders were joined by 500 coin collectors and dealers in an auction house audience seemingly devoid of celebrity bidders, while an additional 534 observers followed the bidding on eBay. As auction houses prepare for their fall seasons in an uncertain economy, the sale price "suggests that the marketplace for important items is enormously strong," said David Redden, a vice chairman at Sotheby's, who was the auctioneer. "This is an astonishing new record for a coin," he said. In an unprecedented move, the auction proceeds were split by the U.S. Mint and a London coin dealer, Stephen Fenton, who had won that right in court after having been arrested by Secret Service agents for trying to sell the coin in the Waldorf-Astoria Hotel in Manhattan in 1996. Henrietta Holsman Fore, the director of the U.S. Mint, who witnessed the sale, said, "The monies we receive will go toward helping to pay down the debt and to fight the war on terrorism." Fenton commented that the double eagle had been on "a long historic journey, with a very satisfying ending." He added, "I am thrilled with the price." The previous numismatic record holder was an 1804 U.S. silver dollar, which sold for $4.14 million in 1999. Sotheby's partner in the one-lot auction was Stack's Rare Coins, with which it shared the customary 15 percent commission. "I have never seen as much interest in the sale of any coin in my 30 years in the business," said Lawrence R. Stack, the company's managing director. "This is the Mona Lisa of coins," said Beth Deisher, editor of Coin World, the largest weekly coin publication in the United States, with a circulation of 85,000. "It is unique. Forbidden fruit." Collectors' Web sites have surged with speculation about the sale price, and enthusiasts even organized betting pools.
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QUESTION:
Who profited off of the 1933 double eagle sale?