For our farmers, harvest is the busiest, most important time of the year. To grow good food, and enough of it, farmers need to understand the science behind the harvest. Our ability to feed ourselves ...

Ask pupils what they know already about photosynthesis, then watch the following clip. Discuss with pupils if they have learned any new facts from the video. What further questions do they now have?

DR CHRIS VAN TULLEKEN:We need energy every minute of every day to stay alive, not just when we're exercising. Now, we all know that our energy comes from our food and our drink but how does it get ...