Exercising the precautionary principle in your life.

If you're pregnant, or considering ever getting pregnant, or know someone who's pregnant or considering getting pregnant (so really, if you're a human being), I've got something for you to consider:

Using a cellphone while you're pregnant appears to nearly double your child's likelihood of having emotional or behavioral problems. (And kids who use a cellphone also have higher risk of behavioral problems.) Researchers have no idea why this might be the case, and obviously there's no clear causality, but the association is significant. So you might want to consider, or suggest that people you know consider, avoiding cellphone use during pregnancy. Just in case.