This four-minute PSA begins with a historical look at the use of DDT in agriculture, communities, and homes around the world. After farmers spray crops, DDT molecules travel on global winds, condensing in the planet’s colder arctic areas, where they freeze into the ice, preserved for future generations. Decades later, the ice melts, releasing DDT, which is absorbed by phytoplankton, the main food source for krill. Birds eat the krill and DDT builds up in their bodies, passed on to baby birds and found in their eggshells.

Petersen is an animator, musician, and member of S.E.A.T. (Seattle Experimental Animation Team).