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?

Changing Time

I have a major problem with Daylight Saving Time (DST). I really wish they would abolish the practice of changing the time on us every year. "Spring ahead, Fall back" should disappear from our language.

Although an early goal of DST was to reduce evening usage of incandescent lighting, formerly a primary use of electricity, modern heating and cooling usage patterns greatly differ, and research about how DST currently affects energy use is limited and often contradictory. The reason for the time shift has become irrelevant. DST's occasional clock shifts present other challenges. They complicate timekeeping and can disrupt meetings, travel, billing, record keeping, medical devices, and heavy equipment. Many computerbased systems can adjust their clocks automatically, but this can be limited and errorprone, particularly when DST rules change. I vote to abolish DST. Can I count on your vote?

What statement is true based on the information in the article?

All That Jazz

Jazz is an American musical art form which originated at the beginning of the 20th century in African-American communities in the Southern United States. It derived from a confluence of African and European music traditions. From its early development until the present, jazz has also incorporated music from 19th and 20th century American popular music. The word jazz began as a West Coast slang term of uncertain derivation and was first used to refer to music in Chicago in about 1915. Improvisation is one of the key elements of jazz and a fundamental part of the nature of the music. In jazz, the skilled performer will interpret a tune in very individual ways, never playing the same composition exactly the same way twice. Depending upon the performer's mood and

personal experience, interactions with fellow musicians, or even members of the audience, a jazz musician/performer may alter melodies, harmonies or time signature at will.

How does the author regard jazz?

The Rainforest

The Amazon River Basin is home to the largest rainforest on Earth. The basin -- roughly the size of the forty-eight contiguous United States -- covers some 40% of the South American continent and portions of eight countries. The basin is drained by the Amazon River, the world's largest river in terms of discharge, and the second-longest river in the world after the Nile.

Since 1970, over 600,000 square kilometres (232,000 square miles) of the Amazon rainforest have been destroyed. This deforestation is mainly due to land clearing for pastureland by commercial and speculative interests, misguided government policies, and commercial exploitation of forest resources.

Deforestation of the rainforest has long-term implications. The loss of habitat for many creatures ensures their extinction. The loss of vegetation depletes the oxygen in the atmosphere, which some say causes global warming.

What is the definition of "habitat" as used in the last paragraph?