Well, the sex life of flowers turned out to be quite revealing. Michael Keith-Lucas was a great lecturer from whom we learnt that plants are pollinated by bees, insects, ants, birds, or themselves, just to name the obvious. The mechanisms and shapes that have evolved to complete this process are simply stunning. When you learn that Darwin found a flower which could only be pollinated by a bird with a tongue 1.5 feet (yes) long, and that his prediction was later discovered to be absolutely true, you wonder how some plants survive when they may depend on just one pollinator. Amazing.
The entries for the October competition are on Past Events but here is a taster: