that belief in sharing knowledge is what drives science communicators like clara nellist, who, when sheraight—up particle physics here, is spreading the word on her socials. we want to understand how our universe works on the very, very smallest scales. i went to a school without a physics teacher, and so i know first—hand what it is like to not have direct access to that information, and so part of the motivation for me is to make sure that anybody who can get online can learn about what we're doing here at cern. so, what can this place do more immediately for humanity? well, the high—energy beams that are whizzing around cern are created by particle accelerators — big ones. but there are many, many smaller ones around the world, and some of those are in hospitals, and they are being used to treat something that will affect a great many of us during our lifetimes — cancer. this is the christie in manchester — europe's largest cancer hospital, and it is one of two places in the uk where cancer patients come to be treated with proton beam therapy. it is a special form of radiotherapy whi