When Verne the turtle and his woodland friends wake up from their hibernation, they find a suburban neighborhood encroaching on their forest home, Verne's first instinct is to retreat into his shell and leave, but then he meets R.J., a con-artist racoon. R.J. views suburbia as a treasure trove of goodies waiting to be discovered. And since he owes a very angry bear a lot of food, the opportunity is to good to pass up -- especially if he can convince his new friends to help him!

Discovery School - 100 Greatest Discoveries - Evolution

 

1. K-T Asteroid Theory of Dinosaur Extinction (1980)
Walter Alvarez postulates that high levels of iridium found in rock core samples around the world provide evidence that an asteroid impact caused the extinction of dinosaurs. Iridium, a common mineral found in asteroids, was discovered in the clay layer at what is known as the K-T boundary. This layer, at 65 million years, lies between the rocks of the Cretaceous and the Tertiary periods and coincides with the mass extinction of dinosaurs.

2. First Dinosaur Fossils Identified (1820s – 1840s)

 

Grade Level : 6 - 12

Reuploaded Thanks to wepr

If A, Then B: How the World Discovered Logic

While logical principles seem timeless, placeless, and eternal, their discovery is a story of personal accidents, political tragedies, and broad social change. If A, Then B begins with logic's emergence twenty-three centuries ago and tracks its expansion as a discipline ever since. It explores where our sense of logic comes from and what it really is a sense of. It also explains what drove human beings to start studying logic in the first place.

The Shadow Side

Cases of random violence have erupted across the country--murderous acts committed by previously non-violent people. Detective Adam Boedecker, grieving brother to one of the suicide-murderers, has discovered that all the suspects had taken a new breakthrough anti-depressant, Valazine. 

 

http://englishtips.org/1150856834-the-shadow-side.html

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