Racing the Rez

Michael Wardian had a simple dream: to run across the United States. For 25 years he prepared, conquering every running challenge imaginable. Setting out to achieve his dream, he uses everything he’s learned to meet unexpected challenges within himself, his two-man crew and the people he encounters along the way.

NOVA leads viewers on a mathematical mystery tour -- a provocative exploration of math's astonishing power across the centuries. We discover math's signature in the swirl of a nautilus shell, the whirlpool of a galaxy and the spiral in the center of a sunflower. Math was essential to everything from the first wireless radio transmissions to the prediction and discovery of the Higgs boson and the successful landing of rovers on Mars. But where does math get its power? Astrophysicist and writer Mario Livio, along with a colorful cast of mathematicians, physicists and engineers, follows math from Pythagoras to Einstein and beyond, all leading to the ultimate riddle: Is math an invention or a discovery? Humankind's clever trick or the language of the universe?

FRONTLINE and Pulitzer Prize-winning reporters from local journalism partner Star Tribune examine one of the most pivotal events in the history of race and policing in America.

An investigation into how a young Air National Guardsman allegedly leaked classified documents on the Discord chat platform. With The Washington Post, FRONTLINE examines Jack Teixeira’s alleged leak of national security secrets, why he wasn’t stopped and the role of platforms like Discord.

The Taliban take over Afghanistan, and the threat of ISIS and Al Qaeda intensifies. On the ground, reporter Najibullah Quraishi (Leaving Afghanistan, Taliban Country) investigates uncertainty and fear among the Afghan people and revisits the lead-up to the U.S. defeat and the Taliban’s return.

Researchers seek solutions to contain the rising acidity levels that are threatening the world's oceans.