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Chapter 20, Section 1(Impact of Science & Technology)
Technology has changed the way we communicate
• In years past, we spoke in person, wrote letters, passed notes, talked on the telephone (home), left a message on an answering machine, & paged the other person
• In recent years we’ve learned to use cell phones, voice mail, e-mail, Facebook, Twitter, & texting
Space race led to joint effort between the US & Soviet Union
• (1972) US & Soviet Union began joint program to dock two spacecraft while in orbit (July 17, 1975)
• In mid-1980’s, astronauts from all over the world joined the Shuttle missions (US)
• NASA teamed with ESA to launch Hubble Space Telescope
• International Space Station (ISS) began in 1998, but crash (Columbia-2003) put program in danger
Technology has changed global communications
• Satellite communications (1960’s) has turned world into a “global village”
• Space program caused computers & its circuitry to be miniaturized
• Today, computer chips power microwave ovens, cell phones, cars, & many other appliances
• Computers are in offices, most homes, & even portable (laptops, I-Pads, etc.)
• Internet opened door for telecommuting (home) & makes information available to anyone
Technology has changed health and medicine
• More powerful microscopes, the laser, & ultrasound advanced surgical techniques
• CT scans & MRI techniques (medical imaging) improved healthcare (injuries, tumors, etc.)
• Genetic engineering allowed scientists to isolate & examine individual genes
• Advances in biotechnology have led to development of disease-fighting drugs
The “green revolution” & gene revolution
• Green revolution (agricultural scientists) began in 1960’s to increase food production worldwide
• Fertilizers, pesticides, & disease- resistant crops helped increase crop yields & avert famines
• Fertilizers & pesticides cause cancer & pollute the environment / too expensive for small farmers
• “gene revolution” involves pest-resistant plant strains, & plants bred to tolerate poor soil