LONDON, England -- Graffiti artist Banksy, famed for infiltrating museum collections without their knowledge and spray-painting public buildings around the world, is holding his first major exhibition in years. A Banksy painting of the British House of Commons at England's Bristol museum. This time, however, the anonymous artist worked in tandem with the director of Bristol museum in the UK. CNN's Max Foster got a preview of his largest project to date. The artist's anonymity gained him notoriety and he became one of the art world's biggest names with his works selling at auction for hundreds of thousands of dollars. The exhibition's range, while very varied, remained true to Banksy form with his usual unconventional take on art. See pictures from Banksy's exhibition " "I think we might have dragged them down to our level rather than being elevated to theirs" Banksy, who is thought to be from Bristol, said about the museum. He filled three stories of the building with his art in 36 hours under tight security, as only a few museum staff were aware of the shows' imminent arrival. His work is hidden among the museum's usual exhibits and is split into different rooms, including installations, paintings and sculptures. In one of the paintings, a character has been cut out and is instead sitting on the painting's frame, perhaps taking a break from posing?

Why did Banksy say his usual unconventional take on art might be displayed in the museum?

Bin Laden and his aides did not need a very large sum to finance their planned attack on America. The 9/11 plotters eventually spent somewhere between $400,000 and $500,000 to plan and conduct their attack. Consistent with the importance of the project, al Qaeda funded the plotters. KSM provided his operatives with nearly all the money they needed to travel to the United States, train, and live. The plotters' tradecraft was not especially sophisticated, but it was good enough. They moved, stored, and spent their money in ordinary ways, easily defeating the detection mechanisms in place at the time. The origin of the funds remains unknown, although we have a general idea of how al Qaeda financed itself during the period leading up to 9/11. General Financing As we explained in chapter 2, Bin Laden did not fund al Qaeda through a personal fortune and a network of businesses in Sudan. Instead, al Qaeda relied primarily on a fund-raising network developed over time. The CIA now estimates that it cost al Qaeda about $30 million per year to sustain its activities before 9/11 and that this money was raised almost entirely through donations. For many years, the United States thought Bin Laden financed al Qaeda's expenses through a vast personal inheritance. Bin Laden purportedly inherited approximately $300 million when his father died, and was rumored to have had access to these funds to wage jihad while in Sudan and Afghanistan and to secure his leadership position in al Qaeda. In early 2000, the U.S. government discovered a different reality: roughly from 1970 through 1994, Bin Laden received about $1 million per year-a significant sum, to be sure, but not a $300 million fortune that could be used to fund jihad. Then, as part of a Saudi government crackdown early in the 1990s, the Bin Laden family was forced to find a buyer for Usama's share of the family company in 1994. The Saudi government subsequently froze the proceeds of the sale. This action had the effect of divesting Bin Laden of what otherwise might indeed have been a large fortune. Nor were Bin Laden's assets in Sudan a source of money for al Qaeda. When Bin Laden lived in Sudan from 1991 to 1996, he owned a number of businesses and other assets.

What source of money did bin Laden hold in Sudan?

You may be wondering, how can a glacier get so big? Why does it move? These are both good questions. In the winter months, precipitation falls as snow. This solid form of water builds up on the ground as long as the temperatures stay cold enough. As the temperature rises, the snow starts to melt. The frozen water changes state back into a liquid state. Nearer the poles, summer does not last very long. If the summer is long enough and warm enough, all the snow may melt. This is what typically happens now. The earth was a little cooler 12,000 years ago. As a result, during the summer months, that amount of snow did not melt. It may have only been an inch or so of snow that melted. The following winter, snow fell on top of this left-over snow. This next winters snowfall had a head start. Year after year, the snow that did not melt became thicker and thicker. Inch by inch the snow started to build up. Over many years, layer upon layer of snow compacted and turned to ice.
What are two characteristics of glaciers?