Just about every solid, liquid, or gas in the world as we know it begins with reactions between individual atoms and molecules. Host David Pogue dives into the transformative world of chemical reactions, from the complex formula that produces cement to the single reaction that’s allowed farmers to feed a global population by the billions.

The fourth episode plunges us into the heart of the jungle for an exciting story of power, politics, and survival. Days after a fierce battle with Western rivals, Jackson, the alpha male, grapples with the aftermath of his injuries. The strength of an alpha is paramount, and physical frailty can quickly translate into political vulnerability. While Jackson's allies waver, Abrams and Wilson see a golden opportunity to seize control.
As Abrams makes strategic moves against Jackson, the forest resonates with news of the ongoing power struggle, attracting the attention of external threats. Battles for leadership are perilous, with uncertain outcomes for both the reigning alpha and the ambitious challenger. This episode promises an intriguing exploration of chimpanzee society and their relentless pursuit of dominance.

The Reel Rock Film Tours have been thrilling crowds in more than 80 cities around the world with the best climbing and outdoor adventure films of the year. More than just film screenings, Reel Rock shows are festive events where climbers and outdoors lovers gather to celebrate their shared passion for adventure. From big walls to big moves, REEL ROCK 10 features athletes Tommy Caldwell, Kevin Jorgeson, Alex Honnold, Jimmy Webb, Daniel Woods and a special tribute to the late Dean Potter. This year's tour boasts an eclectic program that will get you psyched!

The definitive discourse with Noam Chomsky on the defining characteristic of our time - the deliberate concentration of wealth and power in the hands of a select few. Chomsky unpacks the principles that have brought us to the crossroads of historically unprecedented inequality - tracing a half century of policies designed to favour the most wealthy at the expense of the majority. "Requiem for the American Dream" is profoundly personal and thought provoking. Chomsky provides penetrating insight into what may well be the lasting legacy of our time - the death of the middle class, and swan song of functioning democracy. A potent reminder that power ultimately rests in the hands of the governed, "Requiem for the American Dream" is required viewing for all who maintain hope in a shared stake in the future.

Electricity is not just something that creates heat and light, it connects the world through networks and broadcasting. After centuries of man's experiments with electricity, the final episode tells the story of how a new age of real understanding dawned - how we discovered electric fields and electromagnetic waves. Today we can hardly imagine life without electricity - it defines our era. As our understanding of it has increased so has our reliance upon it, and today we are on the brink of a new breakthrough, because if we can understand the secret of electrical superconductivity, we could once again transform the world.

Looking back on the major stories of the year - from the New Horizons mission to the most distant world we have ever visited to the release of the first-ever picture of a black hole. The team relive the highlights and uncover the latest developments.