Looped In: 'Daily Show,' religious freedom, zombies

The stories, some serious and some not so serious, people are talking about right now.

IRAN NUCLEAR TALKS GO DOWN TO WIRE: Secretary of State John Kerry and Iran Foreign Minister Javad Zarif were racing the clock Monday to grind out an agreement aimed at curbing Iran's nuclear program while easing the sanctions that have been bruising its economy.

TREVOR NOAH TO REPLACE JON STEWART ON 'DAILY SHOW': It's a big day for Trevor Noah. He's the guy who'll replace Jon Stewart as host of The Daily Show on Comedy Central, according to The New York Times. Stewart announced on Feb. 10 that he's exiting the show after 16 years.

APPLE CEO TIM COOK POSTS OP-ED BLASTING NEW LAWS: Apple CEO Tim Cook, who on Friday tweeted his outrage against a new religious freedom law in Indiana, stepped up his condemnation of what he called a "very dangerous ... wave of legislation" in an op-ed article on the Washington Post's website late Sunday.

FIVE BOLD PREDICTIONS FOR THE FINAL FOUR: And then there were four. Each Final Four team offers a different story. Kentucky is on a quest to finish as the first undefeated college basketball team since 1976.

SURPRISE VISITOR SAVES 'DEAD'S' DAY:Morgan Jones certainly has a sense of dramatic timing. "The Walking Dead" mystery man, seen twice briefly this season, showed up just in time to save Daryl (Norman Reedus) and Aaron (Ross Marquand) from a swarm of zombie walkers in the Season 5 finale Sunday.

CONFEDERATE FLAG CAUSES STIR DURING DIVERSITY WEEK:A flag flap has created a stir at Windsor High School during the school's Diversity Week. The rights of students to be able to fly flags of their choosing on school property became a discussion point after a student came to school on Tuesday flying a Confederate flag off the back of his truck.

WAS AFGHANISTAN A MISTAKE? VIEWS SPLIT: On Tuesday, President Obama announced that more U.S. troops would remain in Afghanistan longer than originally planned. The president decided to slow the withdrawal, leaving 9,800 Americans on the ground through the end of 2015. While the continued presence of troops may please Afghans — 39 percent of Afghans said their country would be worse off after the U.S. withdraws forces, according to a 2014 Gallup Poll — Americans' views are split over troop presence in the country.