We don't know the exact number of dead insects in the collection at the Natural History Museum in London, but it's more than 34 million.

Our collections, for me, are a place of wonder, The specimens(标本) they contain are the biological heritage of the planet: Splendid to look at and packed with genetic information about the past. Some have come to us from across the globe, and make me feel how small I am, as part of nature.

The insect collection stretches back hundreds of years. For example, we have a robber fly caught in 1680 by the queen's gardener at Hampton Court Palace. near London.

Flies are my focus. Not only are they amazingly diverse, but they're cute. We've got stalk-eyed flies; flies that are lousy then a millimetre in sizes and my favourites, Mallophora robber flies, which look like massive bumble-bees and are highly poisonous. I also have a soft spot for botflies, one species of which matures in camels' noses.

The collection isn't static; there's so much research going on. We're always updating the system of naming the in sect so raisin s evolutionary family trees and describing new species.

The museum lends specimens by post, and we host not just scientists, but visitors such as designers looking for inspiration. We're also trying to digitize the entire collection so that anyone can access it.

I'm working with Mara Lawniczak at the Well come Sanger Institute in Hinxton, UK. We're trying to recover genomes(基因组) from mosquito samples collected over the past century. In the past, people would cut off legs or destroy whole specimens—which fills a director like me with terror. Instead, we are washing the specimens with chemical solutions to obtain DNA. Genetic analysis will help us to distinguish between old mosquito specimens that look similar, and to learn how populations have changed.