A group of Swiss retirees took their government to a top European court Wednesday over what they claim is its failure to take stronger action on climate change.

Lawyers and members of the group Senior Women for Climate Protection appeared before the European Court of Human Rights for a rare public hearing that activists say could mark a legal milestone in legal efforts to force governments to curb greenhouse gas emissions.

The group, which counts around 2,000 members across Switzerland with an average age of 73, argues that older women's rights are especially infringed on because they are most affected by the extreme heat that will become more frequent due to global warming, which current Swiss climate policy contributes to.

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"It’s been proved that we older women are particularly sensitive (to climate change)," said plaintiff Rosmarie Wydler-Waelti, 73, from Basel. "We get sick a little bit faster due to heat waves than older men or other groups."

Swiss seniors are protesting outside the European Court

Swiss seniors are protesting outside the European Court of Human Rights on March 29, 2023, in Strasbourg, France. A group of Swiss seniors are taking their government to court to demand more serious action towards combating climate change. (AP Photo/Jean-Francois Badias)

After exhausting domestic legal avenues, the group has taken its case to the Strasbourg, France-based tribunal in the hope of setting a precedent that will apply to all signatories of the European Convention on Human Rights. It is linked to two further cases brought by other groups that will be heard by the court in the coming months.

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"We are suing for our human right to life," said Lore Zablonier, a 78-year-old from Zurich who stood outside the court with supporters and the environmental group Greenpeace. "With this case, we want to help spur politicians into action a little bit."

A verdict is expected next year.