Venice is Drowning – One of the world's cultural gems and the city of canals and gondola boats is facing an uncertain future as it deals with increasingly higher tides blamed on climate change. John Dickerson reports. Joaquin Phoenix – Meet the real man behind the dark and complicated roles he's known for playing. Anderson Cooper profiles the Oscar-nominated actor from the controversial film "Joker" and gets a rare interview with his family. Rafa – The world's #1 tennis player, Rafael Nadal, takes Jon Wertheim back to his hometown on the beautiful Spanish island of Mallorca. But it's not a vacation, as the court star known as "Rafa" to his fans practices intensely every morning.