A group of Swiss pensioners 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.

They were cheered by supporters and the environmental group Greenpeace who rallied outside the court.

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.

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.

A verdict is expected next year.

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We need more court cases and lawsuits like this, especially here in Canada. It's pretty evident that our governments won't take the necessary measures to reduce GHG emissions enough to ensure a safe future for humanity. We also need to sue the fossil fuel companies.