Morgan and Adam have always wanted children but fears over climate change are making them reconsider.

The committed pair, aged 36 and 35, are part of a growing trend for young couples to abandon plans for a family because of the climate crisis.

Millions of people around the world rallied for climate action over the past two days, including 300,000 in Australia on Friday, ahead of a United Nations climate action summit on Monday.

“I feel so sad, it’s such a hard thing to let go of,” says Morgan, who works in logistics. “My conscience says, ‘I can’t give this child what I’ve enjoyed, I can’t give them the certainty of a future where they can be all that they can be … or have the things they should have…