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.
World's Tallest Water Slide Ready to Open. Get ready to ride. VerrÃ¼ckt, the world's tallest water slide, is finally opening on Thursday at Schlitterbahn Kansas City Waterpark. The 17-story, 168-foot-tall ride in Kansas City, Kansas, was originally scheduled to open May 23 but the date was pushed back three times for more testing and then to fix problems with the conveyor belt. Play.