An insect's-eye view of flowers
What insects see when they approach a flower is very different from what is visible to the human eye.
Professor Iain Stewart uses an ultra-violet camera to reveal the markings some flowers have developed to attract pollinating insects.
The second episode of How To Grow A Planet will be broadcast on Tuesday 14 February at 21:00 GMT on BBC Two. Watch it later online, see more clips or catch up on the series via iPlayer at the above link.