Friday, 5 May 2000

In this week's issue, we find that many public misconceptions about science issues are related to difficulty in scaling.

1. DOOMSDAY? IT'S A SCARY UNIVERSE OUT THERE.
The world remained remarkably calm when the dreaded conjunction of the five visible planets occurred at 4:08 a.m. ET this morning. A book by Richard Noone, "5/5/2000 Ice: The Ultimate Disaster," had predicted that powerful tidal forces would bring an awful end to the world as we know it. However, even as he sought to reassure people, David Ropeik, Director of Risk Communication at the Harvard Center for Risk Analysis may have been misleading about the physics: "The moon exerts more gravitational effect on the earth than any other body in the solar system" (www.msnbc.com/news/402162.asp). Hmmm. The sun's pull is about 180 times stronger than that of the moon. The tides, however, depend on the gradient, and thus vary as the inverse cube of the distance. Because the moon is so close, its effect on the tides are about twice as great as the sun's.

2. "VITAMIN O": COMPANY AGREES TO PAY $375,000 TO SETTLE.
You will recall that WN first exposed the scam 18 months ago, after a full page ad appeared in USA Today (WN 27 Nov 98). Rose Creek Health Products was marketing ordinary salt water as a dietary supplement for $10 per ounce, with claims of significant health benefits. If oxygen could be absorbed by the gastrointestinal tract, which it can't, you would need to drink two liters each second to supply your minimum daily requirement. That's usually called drowning. In addition to consumer redress, the company is barred from claiming that research has demonstrated health benefits. Meanwhile, Beverly Sassoon & Co. picked up the scam, selling salt water as BiOxygen at $17.50 per ounce (WN 7 Apr 00).

3. NUCLEAR PHOBIA: RISK AT LBL IS PUT INTO PERSPECTIVE.
The increase in radiation exposure at Lawrence Berkeley Laboratory due to tritium led the Alameda County Board of Education to call for a moratorium on field trips to the Lawrence Hall of Science (WN 28 Apr 00). The lab calculated the increase to be equivalent to living at an altitude 30 feet higher. My guess, however, is that many people near the lab, rather than being reassured by this calculation, will instead begin sleeping in their basements.

4. THE LOVE BUG: NEW COMPUTER VIRUS IS SEXUALLY TRANSMITTED.
Computer intercourse is risky behavior. Just about everyone has gotten the "I love you" e-mail at least once. Even without the virus, the White House has managed to lose 240,000 e-mail messages over the months, along with all memory that it happened.

Note: Next week's issue of WN will include the statement on National Missile Defense passed overwhelmingly by the APS Council at its meeting in Long Beach on Saturday.



Bob Park can be reached via email at whatsnew@bobpark.org
THE UNIVERSITY OF MARYLAND
Opinions are the author's and are not necessarily shared by the University, but they should be.