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"Nova investigates a provocative new theory that suggests the extinction of more than 34 types of large prehistoric mega-creatures, such as the saber-toothed cat and woolly mammoth, was caused not by climate change or the arrival of the first human hunters, but by the massive breakup of a comet over the Great Lakes region at the end of the last Ice Age, some 12,900 years ago." -- WGBH/Nova website.
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The origin of life is a hotly debated topic. The Christian Bible states that God created the heavens and the Earth, all in about seven days roughly six thousand years ago. This episode in Genesis departs markedly from scientific theories developed over the last two centuries which hold that life appeared on Earth about 3.5 billion years ago in the form of bacteria, followed by unicellular organisms half a millennia later. It is this version of genesis...
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This book follows the human body's journey from the fertilization of a mother's egg all the way through gestation, with highlights on the progress of the nervous system, bone calcification, and the circulatory system. After birth, readers will encounter the microscopic bacteria, fungi, and viruses that can complicate human life, resulting in diseases that affect one or more body systems.
13) OSTI.gov
Summary
This site updates on NOAA satellite activities. NOAA's operational environmental satellite system is composed of: geostationary operational environmental satellites (GOES) for short-range warning and "nowcasting, " and polar-orbiting environmental satellites (POES) for longer term forecasting. Both kinds of satellites are necessary for providing a complete global weather monitoring system. The satellites carry search and rescue instruments, and have...