One person lay in critical condition on Feb. 29, 2008, after the deadly biotoxin ricin was found in his Las Vegas hotel room. What is ricin, and why is it so dangerous?
The female birth control pill has been around for decades, and many men would like to share the contraceptive responsibility. But despite the lingering promise of non-barrier, reversible male birth control options, the FDA has yet to approve any. As we wait for male birth control to become a reality, test your knowledge of its development so far.