Isaac Asimov

Isaac Asimov (1920-1992) was a very prolific writer, best known for his works of science fiction and for his popular science books. Most of Asimov's popularized science books explain scientific concepts in a historical way, going as far back as possible to a time when the science in question was at its simplest stage. Asimov is widely considered a master of the science-fiction genre and, along with Robert A. Heinlein and Arthur C. Clarke, was considered one of the "Big Three science-fiction writers during his lifetime. He also wrote mysteries and fantasy, as well as a great amount of nonfiction. Asimov wrote the Lucky Starr series of juvenile science-fiction novels using the pen name Paul French. Asimov was afraid of flying, so he seldom traveled great distances, partly because his aversion to flying complicated the logistics of long-distance travel. He did enjoy traveling on cruise ships, and on several occasions he became part of the cruises' "entertainment," giving science-themed talks. Asimov was an able public speaker, and enjoyed speaking to groups, especially at science fiction conventions.

Who were the "Big Three" mentioned in the article?

Mr. Rogers' Biography

"It's a wonderful day in the neighborhood!" This familiar line always began the Mister Rogers' Neighborhood program on PBS. The amazing Fred Rogers brought a special message to children around the world. He believed that each person is unique and wonderful in his or her own way and we should accept others just the way they are without trying to change or improve them. Mr. Rogers spread his tolerance message far and wide through the daily broadcasts of his television show, his many books, and finally after his retirement through his website specifically designed for children. Through these venues, Mr. Rogers helped children deal with the real world things that bothered them, such as doctor visits, haircuts, and new siblings.

Fred Rogers left a legacy of kindness, acceptance, and an unending love of learning for all generations.

When taking cover from lightning, you should

Children begin to taste freedom on bicycles. Historians believe that bicycles began around 3500 B.C. in the Middle East although it took 53 centuries before bicycles were fashioned in the way we know them today.

With over 1500 moving parts, bicycles are complex yet simple machines and amazingly the basic design has not changed since the 1880s. A few tweaks have been added, such as gears and hand-operated brakes, but bicycles remain a steady source of exercise and entertainment for both children and adults. Some forms of bicycling are mountain biking and BMX biking which is similar to cross-country motorcycle racing.

In many countries around the world, bicycles are a necessary part of daily existence. Bicycling in China is imperative if you want to go places, due to the vast population in a relatively small area. Bicycles are coming back in high demand all over the world.

About how long did it take for bicycles to look and feel like they do today?

Mr. Rogers' Biography

"It's a wonderful day in the neighborhood!" This familiar line always began the Mister Rogers' Neighborhood program on PBS. The amazing Fred Rogers brought a special message to children around the world. He believed that each person is unique and wonderful in his or her own way and we should accept others just the way they are without trying to change or improve them. Mr. Rogers spread his tolerance message far and wide through the daily broadcasts of his television show, his many books, and finally after his retirement through his website specifically designed for children. Through these venues, Mr. Rogers helped children deal with the real world things that bothered them, such as doctor visits, haircuts, and new siblings.

Fred Rogers left a legacy of kindness, acceptance, and an unending love of learning for all generations.

According to the passage, Fred Rogers believed in: