It’s been a rocky week for investors–One of the worst and most volatile in a while. But markets are up this morning in the U.S. and Europe. More on that. And as two U.S. health care workers who have contracted Ebola continue to receive treatment, several dozen politicians have called for a ban on travel from West African nations stricken by Ebola. Politics aside, there are many Americans who say they’d support some kind of travel ban. But what constitutes a travel ban? And this weekend marks the 30th anniversary of the “National Organ Transplant Act.” That created our current organ donation system, and banned the sale of organs. Today, there are more than 120,000 people waiting for a transplant, and that long list has led a bioethicist to call for changes to the law.