Extras
On Costa Rica’s Pacific coast, turtles and jaguars collide in unexpected ways.
Who rules the streets -- and skies -- of the city?
Uncover the secret world of New York and London’s resilient pigeon flocks.
Discover how pigeons find a mate for life.
Times Square never shuts down, and neither do its pigeons.
Ben Folds on taking a stand for artistic freedom after Trump's Kennedy Center takeover
Trump should 'hold the line' and block AI chips from Chinese market, ex-ambassador says
Caribbean nations hit by Hurricane Melissa begin long road to recovery
News Wrap: Trump slashes number of refugees allowed into U.S.
Trump and Xi outline deal to ease U.S.-China trade war, but tensions remain
Latest Episodes
Find out why deadly flash floods are on the rise and how we can protect ourselves from them.
Explore mysterious 9,000-year-old Stone Age megastructures found in the Arabian Desert.
Discover how two revolutionary ancient inventions changed the course of humanity forever.
Discover how Homo sapiens outlasted Neanderthals – and how they helped make us who we are today.
Follow Homo sapiens as they venture out of Africa and spread farther than any other human species.
Trace the remarkable origin story of Homo sapiens and the crucial moments that shaped our species.
Archaeological discoveries reveal traces of ancient civilizations in the Amazon.
Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.