Astronomers make an extraordinary discovery out in deep space when they uncover a cosmic mega-structure that's one billion light-years long. Now, investigators race to decode the hidden forces that shape the most massive and mysterious structure known in the Universe.
We dive into this space great wall's fiery birth and hunt for the weird cosmic glue that holds it together to reveal how this megastructure rewrites our understanding of the universe on an epic scale.

As Covid-19 puts Britain on lockdown, Jeremy Clarkson suddenly finds that his biggest worries aren’t all related to the upcoming lambing season. 'If you're involved in food production, you are key worker. We're gonna save the nation!... I've smoked a million cigarettes and I've had pneumonia. If I get it , there's not a lot of hope... Am I panic buying? I bought five tins of sardines the other day'.

'Stangest Things' series examines those hidden gems that have been tucked away in museums, laboratories and storage rooms around the world. Experts use the latest technology to investigate these incredible artifacts of history.
A bizarre find called Copper Scroll is one of the famous Dead Sea Scrolls, but it's unlike any of the others; this strange relic might hold clues to a long-lost treasure, and cutting-edge science may finally reveal answers to this billion-dollar mystery.

The Namib Desert is one of the oldest deserts and also one of the most diverse. With 50ºC (120ºF) temperatures and half a millimetre of rainfall annually, we see how this is possible. Half the size of Oklahoma, from its Skeleton Coast through the sea of sand to the haze of distant mountains this apparently forbidding desert hides secret water sources.

Beneath Yellowstone National Park, lies the biggest volcano on Earth. An eruption in the past was so big it plunged the earth into a volcanic winter that lasted years. A super-eruption would be more than millions of Hiroshima bombs going off all at once. It would be even worse than an asteroid impact: Entire cities lost beneath ash, people and animals crushed alive, power networks destroyed, sun dimmed across the globe, harvests failed, widespread famine. Could this nightmare really happen? We will use the latest scientific data to uncover the danger beneath us, as we see our planet like never before.

At the very end of East Africa's Great Rift Valley, there's a 'land that time forgot'--the rolling grasslands of the Luangwa Valley. Seemingly untouched plains teem with Africa's most iconic animals. Some are unique to this place, others are critically endangered elsewhere.
Here, prey exist in remarkable balance, each taking advantage of the secret at the heart of this Eden, the mighty Luangwa River and its dramatic annual transformation from dusty inferno to emerald paradise.