BBC Earth

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Stuck between a herd of elephants charging straight for him and the shark-infested waters on the other side, Cyril has nowhere to hide.

Ash and his team battle rapids, dense jungle and wildlife to uncover the hidden source of the Coppename River.

Stanley Tucci visits one of the most famous and frequented regions of Italy, the Italian Riviera, for the glamour of Portofino and the stunning picture-perfect fishing villages of the Cinque Terre.

Cyril heads to Polynesia to catch a legendary fish known to the locals as the Uruati, but he isn't prepared for the incredible number of sharks lurking below the waters.

The final chapter. Olimba struggles with old age, and the wild dog story takes an unexpected turn. The lions and the hyenas both enjoy a baby boom - but who has the power to rule?

Michael rides one of the steepest and fastest funicular railways in the world and steps into a tropical paradise as he releases exotic specimens at Malaysia's first butterfly sanctuary.

One of the strongest storms on record in Florida's Big Bend region, Hurricane Idalia, makes landfall. Wildfires ravage Oregon as communities flee to safety.

Cyril heads to Polynesia to catch a legendary fish known to the locals as the Uruati, but he isn't prepared for the incredible number of sharks lurking below the waters.

The final chapter. Olimba struggles with old age, and the wild dog story takes an unexpected turn. The lions and the hyenas both enjoy a baby boom - but who has the power to rule?

One of the strongest storms on record in Florida's Big Bend region, Hurricane Idalia, makes landfall. Wildfires ravage Oregon as communities flee to safety.

Cyril heads to Polynesia to catch a legendary fish known to the locals as the Uruati, but he isn't prepared for the incredible number of sharks lurking below the waters.

The final chapter. Olimba struggles with old age, and the wild dog story takes an unexpected turn. The lions and the hyenas both enjoy a baby boom - but who has the power to rule?

Michael rides one of the steepest and fastest funicular railways in the world and steps into a tropical paradise as he releases exotic specimens at Malaysia's first butterfly sanctuary.

One of the strongest storms on record in Florida's Big Bend region, Hurricane Idalia, makes landfall. Wildfires ravage Oregon as communities flee to safety.

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

The final chapter. Olimba struggles with old age, and the wild dog story takes an unexpected turn. The lions and the hyenas both enjoy a baby boom - but who has the power to rule?