Every day 100,000 flights criss-cross the globe with more than 1 million people in the air at any one time. Dallas Campbell and Dr Hannah Fry explore the world of aviation.

Every day 100,000 flights criss-cross the globe with more than 1 million people in the air at any one time. Dallas Campbell and Dr Hannah Fry explore the world of aviation.

Every day 100,000 flights criss-cross the globe with more than 1 million people in the air at any one time. Dallas Campbell and Dr Hannah Fry explore the world of aviation.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.

Every day 100,000 flights criss-cross the globe with more than 1 million people in the air at any one time. Dallas Campbell and Dr Hannah Fry explore the world of aviation.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.

Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.