The Centers for Disease Control says HEPA filters are effective in clearing the air of many particles that cause disease.

VOA: special.2009.07.14

Probably the best argument against supporting Johnson is this: supporting a candidate based on a single-issue alliance is not as effective as supporting a cause.

FORBES: Rethinking Gary Johnson

While effective, it can cause severe short-term memory loss.

FORBES: Rewiring the brain

Next, parents need an effective strategy to address the cause.

CNN: A different kind of parenting resolution