1. Chapter 20, Section 1 (Impact of Science & Technology)

2. 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, , Facebook, Twitter, & texting

3. 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

4. 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

5. 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

7. 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