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.
And there wasnât much loose change left lying around at Nagashima Spa Land Amusement Park in Japan, after the owners shelled out more than $50 million to pay for the Steel Dragon 2000 ride. Itâs the longest roller coaster in the world with a total length of 2,479 metres.Staff.ere are some pointers: Rides. Expedition Everest, situated at Disneyâs Animal Kingdom theme park at the Walt Disney World Resort in Florida, is said to be the most expensive roller coaster ever built. Itâs alleged to have cost the company $100 million to plan and construct over a period of six years.