A deadly new influenza virus has managed to jump from pigs to people in a previously unseen mutated form that can readily spread among humans. How could this happen? There are several plausible explanations.
When uninsured Wal-Mart workers get sick, American taxpayers foot the bill. They pay for coverage through Medicaid, the health insurance plan for the poor. That's what the Walton family, which owns Wal-Mart, banks on.