We use picture-taking-boxes with a very large make-bigger-power to take pictures of the very small building blocks that make up humans and other animals. We can also see the tiny things that do important stuff inside these building blocks. These tiny things are interesting because we need to understand them to see why people get sick and how to make them better. If there isn't a box that does what we need, we build a new one that does! Sometimes we even make boxes that go inside other boxes so we can take different kinds of pictures all at once to tell us different things.The boxes make lots of pictures so we need good ways to understand them quickly with computers. To do this we need to carefully give the computer lots of orders and numbers to control what they do so they do good work. At the moment, even with the best computers this is too hard and takes too long, so we need to think of better ways to train the computer to do good work more quickly. Often we have to ask a person to do the work as they still do it best, but slowly.We have started to ask tens of hundreds of people around the world to help us as they can do good work together more quickly than one person. We can also get them to help us train the computers to do better work in up-coming times. The people that help us are aged from school children all the way up to older people who don't have to go to work any more, and everything in between.