Perjury Trial For Roger Clemens Heats Up

More trouble for the prosecution in the perjury trial of baseball star pitcher Roger Clemens. He is charged with lying to Congress when he said he had never used performance-enhancing drugs. But under cross examination, the key witness has himself admitted to lying and the key evidence has been called into question. NPR's Nina Totenberg explains all to weekends on All Things Considered host Guy Raz.Read More[category World]