Thursday on The World:
Activists walk out of a major international climate conference, protesting that not enough progress is being made to curb climate change.
Also, how President John F. Kennedy's assassination ended hopes for a reconciliation with Fidel Castro.
Plus, why samba defines Brazil.
Every day, reporters and producers at The World are hard at work bringing you human-centered news from across the globe. But we can’t do it without you. We need your support to ensure we can continue this work for another year.
Make a gift today, and you’ll help us unlock a matching gift of $67,000!