Fossil Atmospheres is a project from the National Museum of Natural History in the United States. The team want to compare the leaves of trees living today, with those from the same species that were alive before dinosaurs roamed the Earth. This will unlock the secrets of the past atmosphere on our planet. At the current rate the project will take over 10 years to complete, so it desperately needs all the help it can get! Give to research this Christmas at www.zooniverse.org/projects/laurasoul/fossil-atmospheres.