EditorialA spider monkey swings through the branches of a tree in the Calakmul Biosphere Reserve, Yucatan, Mexico, on July 18, 2022. (Adrian Wilson/The New York Times)
EditorialFILE -- A beach in the Sian Ka'an Biosphere Reserve, a Unesco World Heritage site, in Tulum, Mexico on Nov. 26. 2006. (Adriana Zehbrauskas/The New York Times)
EditorialFILE - Monarch butterflies overwinter in the Rosario Monarch Butterfly Biosphere Reserve near Ocampo, in Michoacan, Mexico, on Feb. 16, 2020. (Katie Orlinsky/The New York Times)