President George W. Bush's former speechwriter, Michael Gerson
, says the Republic party needs to change in order to succeed. He shares his vision for his party's future. Also: a look into how today's political debates could shape the future of science in America. A look at how Blackwater treats its employees. Find out how we can become better stewards of our global water supply. Plus, playwright Eduardo Machado
remembers the foods of his Cuban childhood.