There's been a record number of fires in Amazon this year. What does it mean for Brazilians and the global climate? Plus, the final story in our series marking 400 years since the first enslaved African arrived in the English colonies: The World's Rupa Shenoy reports from Ghana, where she met with the leader of one ethnic group that has apologized for its role in the slave trade. And Nathan Law, one of the leaders of Hong Kong's pro-democracy movement, says he's now starting at Yale Law School but is still getting death threats.