BBC Earth (BBCE)

Examining a controversial theory that Earth was once completely covered in ice.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe. They are strong enough to withstand the full weight of an incubating parent and weak enough to allow a chick to break free. David reveals the wonder behind these miracles of nature.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering seven million bars a day.

A look at the story of Pluto.

Examining a controversial theory that Earth was once completely covered in ice.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe. They are strong enough to withstand the full weight of an incubating parent and weak enough to allow a chick to break free. David reveals the wonder behind these miracles of nature.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering seven million bars a day.