- Perihelion Duration: 01:27
- Trailer for Orbit: Earth's Extraordinary Journey Duration: 00:27
- Shooting the pre-titles Duration: 02:47
- Day 200 - the kindness of strangers Duration: 02:46
- Day 203: Indian monsoon video blog - Helen Czerski Duration: 01:02
- The Met Office - future of weather forecasting Duration: 09:26
Calculate Earth's tilt
Physicist and Presenter Helen Czerski takes you through a step by step guide on how to calculate the tilt of the Earth around a significant time in it's orbit around the Sun.Step by step guide
Blog: What would happen if Earth spun the other way?
Change something as simple as direction of rotation and you change the planet we know.Find out more about Earth's spin
Blog: Earth with 0 degree tilt
The Earth hasn't always rotated with a 23 degree tilt. Pretty much nothing about the Earth's climate stays constant if you wait long enough, and the tilt is no exception.What would Earth look like with 0 degree tilt?
Available on: Video download
From one supplier: iTunes