In this August 2015 file photo, plants burned in the Rocky Fire are shown near Lower Lake, Calif. NPR's environment and climate change reporting encompasses related topics such as wildfires, drought, and other natural disasters. Jeff Chiu/AP hide caption

itoggle caption Jeff Chiu/AP

Former NPR science correspondent (and now host of Science Friday) Ira Flatow interviews a few penguins while reporting from Antarctica in 1979. NPR's environment reporting has increased and expanded greatly since. Katherine Bouton/ hide caption

itoggle caption Katherine Bouton/

A migrant arrives with his son on the shore near the village of Skala Sikaminea, on the southeastern Greek island of Lesbos, Greece on Friday. Greece this year has been overwhelmed by record numbers of migrants arriving on its eastern Aegean islands, with more than 160,000 landing so far. [Caption from AP, lightly edited.] Visar Kryeziu/AP hide caption

itoggle caption Visar Kryeziu/AP