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Simulcast of network BBC One in high definition. From 03/11/2010

BBC One

BBC One is a TV channel that started broadcasting on the 20th April 1964. It replaced BBC Television.

BBC 1

BBC1

BBC One HD

Orbit: Earth's Extraordinary Journey

BBC HD

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BBC Two Scotland

BBC Two Northern Ireland

Until 03/01/2009 BBC Two Wales (analogue) was known simply as BBC Two Wales. BBC Two Wales (digital) was BBC 2W. From 03/01/2009 BBC Two Wales schedules on both analogue and digital became identical

BBC Two Wales

BBC Two England

England

The BBC West region started on 1st September 1957 as part of the BBC Television Service, before becoming BBC One West.

BBC One West

The BBC South West region started on 20th April 1961 as part of the BBC Television Service, before becoming BBC One South West.

BBC One South West

The BBC South region started on 5th January 1961 as part of the BBC Television Service, before becoming BBC One South.

BBC One South

BBC One London

London

BBC One West Midlands

BBC One region covering Derbyshire, Leicestershire and Nottinghamshire.

BBC One East Midlands

The BBC East region started on 1st May 1959 as part of the BBC Television Service, before becoming BBC One East.

BBC One East

BBC One North West

The BBC North East & Cumbria region started in 1959 (tbc) as part of the BBC Television Service, before becoming BBC One North East & Cumbria.

BBC One North East & Cumbria

BBC One Yorkshire

BBC One Oxfordshire

Formerly part of a wider BBC One South East region that included London and part of the South region. Separated from BBC One London 2001-09-03 following reorganisation of the South East region.

BBC One South East

BBC One Cambridgeshire

BBC One Channel Islands

BBC One Yorks & Lincs

BBC One Scotland

Scotland

BBC Northern Ireland region started on 19th April 1955 as part of the BBC Television Service, before becoming BBC One Northern Ireland.

BBC One Northern Ireland

BBC One Wales

Wales

BBC Four HD

Simulcast of network BBC Two in high definition.

BBC Two HD

A BBC TV channel for Scotland which will broadcast every evening and will show drama, factual, comedy and news programmes made in Scotland

Simulcast of BBC Two Northern Ireland in high definition

BBC Two Northern Ireland HD

BBC Scotland HD

Simulcast of BBC Two Wales in high definition

BBC Two Wales HD

Kate Humble

Helen Czerski

Arif Nurmohamed

Jonathan Renouf

Stephen Marsh

Orbit: Earth's Extraordinary Journey: Episode 3

Episode 3

BBC Two - Orbit: Earth's Extraordinary Journey, Episode 3Search BBC

Helen Czerski shows how the earth's angle of tilt creates the most extreme weather.

Kate Humble is in the Arctic, where spring arrives with a bang. Helen Czerski chases a tornado to show how the earth's angle of tilt creates the most extreme weather on the planet.

Right now you're hurtling around the sun at 64,000 miles an hour (100,000 km an hour). In the next year you'll travel 584 million miles, to end up back where you started. 

Presenters Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun for one complete orbit, to witness the astonishing consequences this journey has for us all. 

In this final episode we complete our journey, travelling back from the March equinox to the end of June. Kate Humble is in the Arctic at a place where spring arrives with a bang, whilst Helen Czerski chases a tornado to show how the earth's angle of tilt creates the most extreme weather on the planet.

BBC Two

BBC Two is a TV channel that started broadcasting on the 20th April 1964.

BBC 2

BBC2

BBC Two is a lively channel of depth and substance, carrying a range of knowledge-building programming complemented by great drama, comedy and arts.

Factual: Science & Nature

The ultimate guide to how the tilt of the Earth influences our weather

Right now you're hurtling around the Sun at a hundred thousand kilometres an hour. Join Kate Humble and Dr Helen Czerski as they explore the relationship between the Earth's orbit and the weather

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