You know that different species of animals are found all over the world. Animals live in cold oceans, hot deserts, steamy rain forests, and on windblown mountaintops. Each one of them has a unique set of adaptations. You may be surprised to learn that animals of the same species have adaptations that allow them to survive in very different environments.
While frequent flyer Arthur Dent searches the universe for his lost love, Ford Prefect discovers a disturbing blast from the past at The Hitchhiker's Guide HQ. Meanwhile, on one of many versions of Earth, a blonder, more American Trillian gets tangled up with a party of lost aliens having an identity crisis. And just when Arthur thinks he has found his true vocation on the backwater planet of Lamuella, the original Trillian turns up with more than a little spanner in the works. A stolen ship, a dramatic stampede and a new and sinister Guide lead to a race to save the Earth again.
Discovery School - 100 Greatest Discoveries - Earth Science
1. Earth's Core (1906) Seismologist Richard Oldham determines that earthquake waves move through the central part of the Earth much slower than through the mantle around it. He surmises that the Earth has a core composed of liquid.
2. Earth's Inner Core (1930s) In 1936, Inge Lehmann documents that some seismic waves from deep inside the Earth's core do not pass through, but are reflected back. It becomes clear that the Earth has an inner core consisting of a small, solid iron sphere that is surrounded by a thick outer core composed of liquid iron.
1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discovers microorganisms in a drop of water. He observes sperm, bacteria and red blood cells.
2. The Cell Nucleus (1831) While studying an orchid, botanist Robert Brown identifies a structure within the cells that he terms the "nucleus."
3. Archaea (1977) Carl Woese discovers bacteria are not the only simple-celled prokaryotes on Earth. Many of the organisms classified in the new kingdom of Archaea are extremophiles.
The Pillars of the Earth sweeps through four decades of 12th Century England drawing the listener into the raw, flamboyant middle ages. It is a shining saga of good and evil, treachery and intrigue, violence and beauty. Not-so-noble knights, righteous heroes, valiant heroines and both virtuous and immoral men of God highlight this story. They manipulate, and are in turn manipulated by, the political turmoil and unrest between the reigns of Henry I and Henry II. The listener will cheer on the fates of the virtuous and hiss at the evil-doers. A truly fascinating story that the listener will never forget.
