Scientists have discovered a new subatomic particle with profound implications for understanding our universe. On Wednesday, they announced they've found a particle believed to be the long-awaited Higgs boson. Nicknamed the "God particle," it represents the final piece in a theory that explains the basic nature of our universe.
In the days since the Supreme Court's historic health care ruling, there has been a good deal of speculation about whether Chief Justice John Roberts changed his mind in the course of deliberations, deciding late in the game to uphold the constitutionality of most of the law.
Even before the decision was announced, conservative writers railed that liberals and the so-called mainstream media were trying to intimidate the chief justice.
Chief Justice John Roberts has been called to task by conservatives for siding with the more liberal justices to uphold President Obama's health care law. This week a CBS reporter said Roberts switched his views after at first siding with conservatives. Justices sometimes change their minds after the initial conference on a case as they circulate draft opinions, consult with colleagues and think about the issues. What's unusual was the leak which was an apparent attempt to undermine the chief justice. Nina Totenberg talks to Robert Siegel.
A generation ago, he terrorized Colombia with a wave of bombings and assassinations that nearly brought the state to its knees.
Now, nearly 20 years after Pablo Escobar was shot dead following a long manhunt by Colombian and American agents, the flamboyant chief of the Medellin cocaine cartel is being resurrected by Colombian television.