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What actually is 'ethical porn', and can it truly be ethical?

In Portugal, a rewilding initiative reintroduces large herbivores in the ecosystem.

Why humans are one of only two mammals known to tolerate the burn of spicy hot chilli peppers.

BBC's Tom Brook explores never-before-seen footage and shares his personal connection with the new documentary.

Bernadette Russell spent a whole year being kind to strangers. How did it change her?

Giant ravines: Entire communities are disappearing because of an extreme form of soil erosion.

First broadcast in 1954, the celebrated naturalist's first on-screen appearance is now available in colour.

Could one of the world's most destructive materials become part of the solution to fighting climate change?

One team is on a mission to create 3D printed sea walls with environmental benefits.

Scientists are preparing to drill into the rock of an Icelandic volcano to learn more about how volcanoes behave.

To sustain an ever growing global population, we need to produce more food.

An endangered bird from the early 16th Century is making a comeback in Europe.

The ancient art of extracting purple dye from sea snails.

Madagascar’s fishermen had a plan to save the octopus population.

New islands are built in the Maldives to create more space. Can these islands be built more sustainably?

Michaela Strachan follows the scientists trying to entice Turkey's brown bears back onto their migration routes.

Tech Now visits Zambia to see how Bitcoin is helping to provide villagers with electricity.

Black holes are one of the mysteries of the universe where all the laws of nature as we know them stop working.

Watch as weaverbirds build intricate nests along the Blue Nile to attract a mate.

The Travel Show visits the Libearty Sanctuary where over 130 bears have been given a home.

The Tech Now team take to the skies in Sweden to explore developments in electric flight to clean up air travel.

We explore how maple syrup can be a healthier alternative to refined sugar with significant benefits.

At their peak, they were akin to royalty. Today, their estates conceal hidden treasures.

Iceland is one of the world's most volcanic regions. Now scientists are tapping into this hot source of energy.

Discreetly located in a sleepy Venetian square, Palazzo Fortuny surprises whomever ventures in.

BBC travel reporter Lucy Hedges leaves city life behind to embrace nomadic living in the Mongolian countryside.

Writer Carmen Roberts tours Puglia's coast, meeting local elders who are trying to preserve a pasta tradition.

A small town in the south Indian state of Tamil Nadu is home to hundreds of pairs of twins.

The Travel Show goes to Bosnia to meet divers jumping from a 24-metre-high UNESCO listed bridge.

Emeline Nsingi Nkosi heads into Berlin's underground U-Bahn system to visit the disused war bunkers.

A theme park that has been abandoned for years is being kept alive by enthusiast Hyun Jun-Su.

Along with gastronomy, it showcases what lies in the Nordic Seas.

A metal detectorist has uncovered something pretty unexpected and highly valuable on farmland in rural England.

In the Mahabharata, the ancient kingdom of Dwarka is said to have sunk beneath the Arabian Sea.

Melting glaciers are revealing thousands of ancient Viking artefacts covered up by ice and snow until recently.

The 13th Century 'Castle Frankenstein' that may have inspired a monster book.

In 1993 the 2,500-year-old mummified remains of a woman were discovered in the frozen Ukok Plateau in Siberia.

How the discovery of the world's oldest drinkable champagne is inspiring new green solutions.

What thick, tangy, creamy white sauce links Stalin, French haute cuisine and American mass industrialisation?

The ancient Tiwanaku civilisation is known as the 'mother culture' of South America.

Why are blinds ubiquitous in the south of Europe but almost unheard of in the north?

A deep dive into the psyche of a country that’s about to go on "grandes vacances" all summer.

We meet the women embracing an iconic Somali word.

We meet the creators behind the current ASMR boom.

Counting on our fingers feels like such a natural thing to do, so how come we all do it so differently?

Early birds: Why do Colombians tend to get up earlier than all other countries around the world?

Filmmaker Gary Hustwit has created a documentary which can rewrite itself before every screening.

This Tokyo project is reimagining the city though its public toilets.

Mount Etna looms large over daily life in Sicily.

Scientists exploring the ocean off the New Zealand coast believe they have discovered 100 new marine species.

The black-necked cranes are a revered species across the Himalayas.

In the BBC Select documentary Penguins: Spy in the Huddle, we explore the world of penguin fathers.

Wildlife expert Nick Baker explores the influence of the natural world on the art of Japanese bonsai.

In a remote archipelago of Patagonia, 152 wooden churches hide a secret strength in their structure.

An intriguing mix of cultures await travellers who are prepared to explore beyond the beaches.

While most deserts are predicted to expand, increased rainfall could turn the Great Indian Desert green.