BBC Earth

How did the elephant get so big? Chris Packham explores the four-billion-year story of how a tiny cell evolved into complex, gentle giants.

Michael visits the busiest fishing port in Andalucia, and stops off in Huelva city.

A once in a generation eruption on a volcanic island. In the United States, heavy rain and snow melt submerge a town and in Italy, giant hail pulls up pavements, and traps drivers in their cars.

Bear and tennis champion Roger Federer hit the slopes the hard way.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Simon Reeve voyages across the Coral Triangle, a remote wilderness of tropical reefs and jungle-clad islands described as the Amazon of the seas.

Actor Joseph Gordon-Levitt tackles Kenya's unyielding terrain with Bear Grylls. Dropped into the elements from a helicopter, Joseph and Bear navigate a perilous rappel and milk a camel.

Whether a tree's lifespan is a hundred or a thousand years, eventually it reaches the end of its story and dies. But for trees, the end of one life can mean the beginning of another.

Griff Rhys Jones journey heads down New Zealand's back roads sees him travel from Auckland to the Coromandel, on to Taupo and finally Wellington.

Ben meets a family at the start of their new life, undertaking an ambitious renovation of a dilapidated farmhouse in a Bulgarian village, discovering how crucial this fresh start is for them.

Actor Joseph Gordon-Levitt tackles Kenya's unyielding terrain with Bear Grylls. Dropped into the elements from a helicopter, Joseph and Bear navigate a perilous rappel and milk a camel.

Whether a tree's lifespan is a hundred or a thousand years, eventually it reaches the end of its story and dies. But for trees, the end of one life can mean the beginning of another.

Inspect an abandoned silo complex repurposed into a show-stopping art gallery, then visit a family home carved out of an ancient fortress.

Actor Joseph Gordon-Levitt tackles Kenya's unyielding terrain with Bear Grylls. Dropped into the elements from a helicopter, Joseph and Bear navigate a perilous rappel and milk a camel.

Whether a tree's lifespan is a hundred or a thousand years, eventually it reaches the end of its story and dies. But for trees, the end of one life can mean the beginning of another.

Griff Rhys Jones journey heads down New Zealand's back roads sees him travel from Auckland to the Coromandel, on to Taupo and finally Wellington.

Ben meets a family at the start of their new life, undertaking an ambitious renovation of a dilapidated farmhouse in a Bulgarian village, discovering how crucial this fresh start is for them.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Griff Rhys Jones journey heads down New Zealand's back roads sees him travel from Auckland to the Coromandel, on to Taupo and finally Wellington.