Diana Nyad began her 103-mile swim from Cuba to Florida Friday. She was about a third of the way by Saturday afternoon, moving through calm waters, according to her Twitter account.
Diana Nyad, an endurance swimmer, says that her 103-mile swim will show that 'we have many, many years of vitality and strength and service left in us.'
The new estimate from marine scientists comes two weeks after a report that prompted rosy conclusions from some Obama administration officials about the Gulf oil spill.
Oil spill cleanup: The growing BP oil spill threatens a critically endangered sawfish with extinction, as well as many other threatened species.
Waters around the Florida Keys are nine inches higher than a century ago. Efforts to battle rising sea levels make the Keys 'a canary in the coal mine,' an indicator of what other areas might need to prepare for.
But renewed dialogue with the Castro government is likely to start and end with that one issue.
The Supreme Court refused Monday to hear their appeal. Their lawyers had argued they couldn't receive a fair trial in Miami.
A new approach could represent a relatively easy first step down a generally more controversial path of engaging with America's adversaries.