Years to reach a market audience of 50 million:
Radio: 38
TV: 13
Computer: 4
Number of Internet devices in ...
1984: 1,000
1992: 1 million
2006: 600 million
Travel from New York to California:
1848 wagon train: 5 to 6 months
1920 train: 3 days
Faster and faster
February 20, 2009 at 11:27PM
2009 jet plane: about 5 hours
Humans have been evolving on Earth for around several million years, but it only took 66 years to go from the Wright brothers' flight (1903, above) to the Apollo 11 mission that put a man on the moon (1969, right).
Sources: "Shift Happens," by Karl Fisch; www.geocities.com; www.nasa.gov
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It’s too soon to tell how much the immigration crackdown is to blame.
