Many of the experiments that appear to provide evidence of an effect are flawed, subject to experimental error, or are difficult to interpret.

FORBES: Should The FCC Re-Examine Cell Phone Radiation?

He and Dr. William Cassells had developed an experimental cancer treatment that they thought could have an effect on my cancer.

CNN: STORY HIGHLIGHTS

Federal researchers who launched an experimental cyberattack last year in Idaho caused a generator to self-destruct, prompting fears about the effect of a real attack on the nation's electrical supply.

CNN: U.S. at risk of cyberattacks, experts say