Officials with the World Anti-Doping Agency are scrambling to contain an Olympic doping scandal involving Chinese swimmers. Critics say the organization's credibility is in question.
The U.S. is increasingly concerned about the impact of Chinese overcapacity on manufacturing and the impact that will have on American businesses and workers.
Another huge patch of seaweed from the Sargasso Sea is floating towards Caribbean and South Florida beaches. Scientists are trying to predict where and when it will reach the shore.