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 Tallest Water Slide in the World. The Beach Park is an aqua park and resort located just outside the city of Fortaleza, Brazil. It is also home to the worldâs tallest and highest water slide, the aptly named âInsanoâ. Insano stands at a staggering height of 41 meters (134.5 ft) with an approximate drop time of 4-5 seconds. Their site claims that riders can reach a speed of 105 km/h (65.2 mph).