Genetic breakthroughs have shed light on how life evolves in real-time. From filling in the missing links to creating a new species, in the last 50 years scientists have solved some of the biggest mysteries of evolution. In this episode, we look at revolutionary discoveries that shook the world and may shape our future.

Without the chemistry of photosynthesis, ozone, and a molecule called Rubisco, none of us would be here. So how did we get so lucky? To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.

(Click CC for subtitles) The Last Narc tells the story of a fallen hero, the men who killed him, and the one man who risked everything to find out what really happened and why. Highly decorated special agent Hector Berellez, who was assigned to lead the DEA's investigation of Camarena's murder, peels back the layers of myth and propaganda to reveal the bone-chilling truth about a conspiracy that stretches from the killing fields of Mexico to the halls of power in Washington, D.C.
The first episode is set in the mid-1970s. The newly formed DEA recruits two Mexican-American street cops: Kiki Camarena and Hector Berrellez. Kiki is assigned to Guadalajara, home turf of the Guadalajara Cartel, while Hector targets cartel operations in Los Angeles. The Cartel is putting cops on its payroll, including three Jalisco state policemen. When Kiki is kidnapped it rocks both sides of the border

(Click CC for subtitles) Hector Berrellez's informants give him ground breaking evidence - first-hand, eyewitness accounts of Kiki's kidnapping, torture, and murder. He learns the incident took place in a cartel hacienda where high-level Mexican government officials were present, along with a mysterious Cuban. They also reveal the cartel and governments attempts to cover up the crime.

After four decades of searching for him, they got a one hundred percent match to the Golden State Killer's DNA. As 72-year-old former police officer Joe DeAngelo's arrest unfolds in real time, chilling facts materialize that illuminate Michelle McNamara's prescience in her book's epilogue.

Horses. Powerful, graceful, and thunderously fast. No animal has made a greater impact on society or given humans more freedom and mobility. In a spectacular adventure, the film unlocks the mystery of the first horse warriors on the vast, grassy plains of Kazakhstan, where horses still roam free, and nomadic herders follow their traditional way of life.
Investigating clues from archaeology and genetics, researchers reveal vivid evidence of the very first horsemen. They also discover warriors who swept across Europe and turn out to be the ancestors of millions today.