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Adapted from Dinosaurs: The Very Latest Information and Hands-On Activities From the Museum of the Rockies, by Liza Charlesworth and Bonnie Sachatello-Sawyer. A Scholastic Professional Book. The last dinosaurs died approximately 65 million years ago. Although the cause of their extinction is still a mystery, climatic change, diseases, changing plant communities, and geologic events could all have played a role. Lately, dinosaur extinction theories have been the subject of much debate and controversy. A recent explanation, supported by many scientists, suggests that dinosaurs died out soon after a huge meteorite crashed to Earth near the Gulf of Mexico. A giant meteorite, they reason, could have landed with an impact that kicked up enough dust and debris to block out sunlight for a long time — leading to a deadly chain of events. Without the sun, all the plants died; without the plants, all the plant-eaters died; and without the plant-eaters, all the meat-eaters died. Sounds reasonable. But there is one problem with this theory: Paleontologists have not yet been able to find dinosaur skeletons in rocks dating to the period of impact. Some evidence even seems to indicate that all the dinosaurs had died before the meteorite hit. What is the answer? As paleontologists search for clues to support their theories, they agree to disagree.

Until the Red Sox swept the Cardinals to win the World Series after beating the Yankees in the greatest postseason collapse in baseball history

ts origins, of course, date to the January, 1920 sale of Babe Ruth to the Yankees for money that Boston owner Harry Frazee desperately needed to pay the mortgage on Fenway Park

For snowboard and ski enthusiasts around the world, this is known as "Champagne Powder."

The health benefits of pet ownership are obvious for people who like animals, and most of us doat on friendly, clean, non-threatening animals. Dogs and cats are generally more affectionate and entertaining as pets than, say, fish or birds or ferrets, though many delight in those animals, too.

Besides that, a pet gives you something to care for and thus provides some structure for your life.

is crucial in order to build a solid base of conditioning. This type of training should be executed 3-4 days per week and can involve activities such as running, biking, hiking and swimming.

Running is extremely effective, but it is also extremely stressful if done over long periods and distances. Cross-Training is an effective method to use in order to get results with little risk to your body

. The stresses that the body encounters doing a variety of activities is more beneficial to the athlete than the stresses encountered by doing the same old, tired routine. Also, the risk of injury is greater if you only take part in one activity.

Tokyo, Japan Current Population: 35.2 million Projected 2025 Population: 36.4 million Annual Growth Rate 2007 to 2025: 0.11%

Tokyo is a major global financial center. Its rail system, the largest in the world, is clean and efficient.

Tokyo's water and electricity capacity is in fine shape for a growing population, experts say