Nasa's Anti-Gravity Machine

[Keneke]

http://popularmechanics.com/science/research/1997/12/antigravity_machine/

A mention of my city (Huntsville), and my alma mater (UAH), no less!

[arcticpenguin]

It's the Podkletnov crap again. Search the back issues of Bob Park's What's New (http://www.aps.org/WN/) column for mention of this.

From your link:

Podkletnov noted that objects above the rotating disk showed a variable but measurable loss of weight, from less than .5 percent to about 2 percent. He had no explanation," explains Koczor.
There you go. He can't explain it so it must be anti-gravity.

Brantley says researchers originally saw a slight gravity shielding effect when they placed instrumentation above a smaller, stationary disc. It turned out to be the result of the magnetic field. Adding ordinary 1/2-in. iron plates removed this anomaly. Some critics contend that if Podkletnov had taken a similar precaution, the effects that he observed would have likewise disappeared.

[Keneke]

Notice the winking emoticon.