Answers to Some Questions About Emergency Contraceptive "Plan B"

Wall Street Journal -- Health Blog: What is Plan B, Anyway? (And Can Guys Buy It?), by Katherine Hobson:

Plan B became the week’s big health story when, as the WSJ reported, the head of HHS overruled the FDA and blocked the emergency contraceptive pill from being made available to teens under 17 without a prescription.

President Obama joined the fray yesterday, when he said he didn’t influence HHS Secretary Kathleen Sebelius’s decision, but agreed with it. (We heard from plenty of you when we asked whether Sebelius was right.)

Here are answers to some basic questions about Plan B. . . .