Soldiers and police are patrolling the streets of Paris as the city hosts the Summer Olympics. Parts of the city are off-limits, including much of the Seine river, as the “City of Light” goes on maximum alert to protect athletes and fans. Also, the UAE — where protests are banned — sentences 57 Bangladeshi residents to lengthy prison terms for demonstrating in solidarity with people in Bangladesh over job quotas. And, new rules at the US border have some dog owners concerned. Plus, an international group of scientists discovers "dark oxygen" 13,000 feet below the ocean's surface.

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