To commemorate the 50th anniversary of Earth Day on April 22, ELLE partnered with Conservation International to highlight women seeking climate justice. For our second annual Conservation Issue, we go behind the scenes of Jane Fonda’s bold new protest movement—and the night she spent in jail. Rosario Dawson shares how growing up in a family of squatters inspires her work today. Grimes tells us how motherhood makes her want to fight harder for the planet.