1 The cerebrum makes up 85 percent of the brain's weight. 2  It contains about 86 billion nerve cells (neurons), the gray matter. 3  It contains billions of nerve fibers (axons and dendrites), the white matter. 4  These neurons are connected by trillions of connections, or synapses.
Making a Mammoth splash: The longest water-coaster in the world. These are the first images of the world's longest water-coaster - a ride that is guaranteed to make a splash when its (flood) gates open next year. The Mammoth, which cost $9 million (Â£5.5 million) and features a five-storey drop, will open at Holiday World & Splashin' Safari, in Santa Claus, Indiana, in May 2012.
The Fury 325 is at Carowinds amusement park in Charlotte, North Carolina. It reaches higher than the Statue of Liberty and is one of fastest in world. Also North America's longest steel roller coaster, with a 6,602ft track. World's tallest and fastest 'giga' coaster, meaning it has a 300-400ft drop.