Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
“I was always in feminist groups who wanted to keep the Earth clean,” says Rosmarie Wydler-Wälti. Based in Basel, Switzerland, Wydler-Wälti has been an environmental and feminist activist since her youth in the 1970s. Now 73, she is co-president of the Association of Senior Women for Climate Protection (KlimaSeniorinnen) in Switzerland, a group of more than 2,000 older women that has, this year, taken the Swiss government to the European Court of Human Rights over its climate-change policy.