Aaron Sidderย is a freelance writer based out of Denver, Colo. He has a masterโs degree in ecology from Colorado State University. Aaron was an AGU-sponsored AAAS Mass Media Science & Engineering Fellow atย National Geographicย in 2016, and he has been writing forย Eosย ever since. In addition toย Eosย andย National Geographic,ย he has written forย National Geographic Kids Magazine, Smithosonian Smart News, 5280 Magazine,ย and the Santa Fe Institute. In his free time, he cultivates an extensiveโand growingโcollection of field guides from around the country.