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 Beast (roller coaster) The Beast is a wooden roller coaster located at Kings Island in Mason, Ohio. Built in-house, it opened in 1979 as the tallest, fastest, and longest wooden roller coaster in the world. The Beast has remained the longest wooden coaster in the world at 7,359 feet (2,243 m) and spans more than 35 acres (14 ha) utilizing the surrounding terrain for many of its elements.