第二篇

　　Citizen Scientists

　 　Understanding how nature responds to climate change will require monitoring key life cycleevent-flowering，the appearance of leaves，the first frog calls of the spring all around the world．

　　But ecologists cant be everywhere so theyre turning to non-scientists，sometimes called citizen scientists，for help．

　 　CIimate scientists are not present everywhere．Because there are so many places in the worldand not enough scientists to observe all of them，theyre asking for your help in observing signs ofclimate change across the world．The citizen scientist movement encourages ordinary people too bserve a very specific research interest-birds，trees，flowers budding，etc．and send their observationsto a giant database to be observed by professional scientists．This helps a small number of scientiststrack a large amount of data that they would never be able to gather on their own．Much like citizenjournalists helping large publications cover a hyper-local beat，citizen scientists are ready for theconditions where thev live． All thats needed to become one is a few minutes each day or each weekto gather data and send it in．

　　A group of scientists and educators launched an organization last year called the National Phenology Network．Phenologyis what scientists call the study of the timing of events in nature.

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