About the size of a smaller cauliflower, the mind is often a mass of jelly-like fats and tissues weighing approximately 1.4 kilograms. It contains about 100 billion neurons that coordinate our both mental and physical processes, and its divided into four areas - the cerebrum (the biggest part of the brain; it sits near the top of the organ), the cerebellum (sits within the back with the cerebrum and it is the second largest area of the mind), the diencephalon (located within the middle from the cerebrum at the top of the brain stem) and your brain stem (posterior part of mental performance, responsible for many life support processes such as regulating heart rate). Unlike other apes, orangutans tend to be more solitary. About the only time they encounter the other person is the place mating or sharing a fruiting tree. They spend roughly 90 percent of time in trees. They walk on all fours when on the ground and unlike the African apes, they use their palms or fists as an alternative to their knuckles. Males will move through the forest making loud howling calls, that may be heard 1.2 miles away, to make certain they stay out of each other's way. They are active in the daytime and at night, they'll build a nest by bending branches in to a platform so they can sleep on within the trees. To protect themselves in the rain and sun they are going to create a shelter from leafy branches, and they are even proven to use large leaves as umbrellas or ponchos. It is said that approximately 50 percent of men and women come with an allergy to latex. The elastic-like material that comes from the sap of rubber trees is the thing that most condoms are made from now. It has proven to be quite effective as being a defense mechanism against STD's. However, for a few, experience of Latex has been shown to be very irritating and uncomfortable. What do you do when you're allergic to latex and you also don't trust every other methods of safe sex? There are other alternatives. Both Polyurethane and Lambskin condoms are latex free. They are also thinner as opposed to typical latex condom, making sex a little more enjoyable from a sensational standpoint. The only downfall to using Lambskin and Polyurethane are: Polyurethane condoms usually fit a bit loose. You have to be extra careful when taking them off. Lambskins aren't as effective against STD's. They have tiny skin pores in them. Some STD's can certainly break through. Lambskin's aren't ideal for a non-monogamous relationship. Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials.