When they are in the shade, it's night time. SEYMOUR: Hello, Seymour Science here! As we all know, sometimes it’s day… and sometimes it’s night… but why do we have day & night? My guest ...

You can learn more about day and night by experimenting with fruit ... This short film is from the BBC Teach series Explain, Explore, Expand. It is the combination of the Earth’s shape, your ...