.... have worked continuously to improve the success rate of captive breeding of the Giant Pandas. This has proved to be quite a challenge, all the more so since pandas are only receptive to breeding for a very brief period in late spring or early summer. Research efforts have, however, paid off. Since 1991 natural mating has resulted in eight births at the Wolong centre. In addition to experience gained over the years at Wolong, the recent success of births can be attributed to improved cooperation between China's Ministry of Forestry and the country's zoos involved in panda breeding, as well as to an exchange of information and technology between Chinese and we .....

.... gets within its wings or fuselage. Fuel is considered a chemical energy. Fuel can take the form of gases, solids or liquids. When fuels combine with oxygen from the air, they release their stored energy as heat. We recognize this process as burning. The individual relies on food for fuel which contains energy-giving substances that our bodies can store until we need this energy to use our muscles. When we do use our muscles within us, we may not always be sure that heat is given off. Our bodies do not burst into flames but the perspiration on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The w .....

.... in continuous release of nuclear energy. Naturally occurring uranium contains only 0.71 percent uranium-235; the remainder is the non-fissile isotope uranium-238. A mass of natural uranium by itself, no matter how large, cannot sustain a chain reaction because only the uranium-235 is easily fissionable. The probability that a fission neutron with an initial energy of about 1 MeV will induce fission is rather low, but can be increased by a factor of hundreds when the neutron is slowed down through a series of elastic collisions with light nuclei such as hydrogen, deuterium, or carbon. This fact is the basis for the design of practical energy-producing fiss .....

.... how powerful muclear energy really is. Such as the underwater explosion of an atomic bomb at Bikini during 1946. This powerful type of energy comes from many things such as atoms and subatomic particles; an atom is a tiny bit of matter that has very little weight. They are much too light to be weighed directly, but scientists have developed methods of determining these tiny weightd by using special labratory instruments. Hydrogen is the lightest of all atoms and carbon atoms weigh twelve times more than the hydrogen atom. Atoms that make up one alement are not like atoms that make up another element. These (atoms) are not simple particles, their stru .....

.... The northern spotted owl falls under the more serious condition of being endangered. Also, the bill forbids federal agencies to fund or carry out any activity that would threaten the species or its' habitat. It is the latter part of the bill that causes the controversy. Under the ESA, loggers should not be allowed to cut down the old- growth of the forest. The old growth of a forest includes the largest and oldest trees, living or dead. In the case of the North Coast forests, this includes some thousand-year-old stands with heights above three-hundred feet and diameters of more than ten feet. In 1990, the number of spotted owls dropped to 2000 breed .....

.... And God said, "Let there be an expanse between the waters to separate water from water." (Gen. 1:6) And God said, "Let the water under the sky be gathered to one place, and let dry ground appear." And it was so. (Gen. 1:9) - - - - Further reading: 1. John H. Schwartz, "Completing Einstein", SCIENCE 85, vol 6, pp 60-64, 1985. 2. Robert Palmer, "What's a Quark?", SCIENCE 85, VOL 6, pp 66-71, 1985 3. Bruce Schechter, "The Moment of Creation", DISCOVER, April 1983, pp 18-25. 4. Lawrence R. Sulak, "Waiting for the Proton to Decay", AMERICAN SCIENTIST .....

.... (in total amounting to the equivalent of a layer about 3 mm thick at ordinary pressures and temperatures) which is vital in preventing harmful ultraviolet rays of the sun from reaching the earth's surface. Aerosols in the atmosphere have a detrimental effect on the ozone layer. Large holes in the ozone layer are forming over the polar regions and these are increasing in size annually. Paradoxically, ozone is toxic! Undiluted ozone is bluish in colour. Liquid ozone is bluish-black, and solid ozone is violet-black. Oxygen is very reactive and capable of combining with most elements. It is essential for respiration of all plants and animals and f .....

.... travel in packs or schools. These animals are very independent and seldom socialize with one another. A platypus home range is where he/she feeds and lives. It is unknown how distinguishes its territories. If overcrowding is present in the home range, it is left up to the younger platypus to find a home range of its own. Home ranges house several burrows, that are located along the river bank. There are two different types of burrows, dwelling burrows, and nesting burrows. The nesting burrows are used for rearing young, and the other dwelling burrow is used by both sexes as a place to rest, sleep and eat. Burrows have a problem with maintaining a flow o .....