Car collisions with deer, elk and moose happen about a million times a year, but what if animals had their own crossings to move around safely?

In Banff National Park, the strategic placement of wildlife overpasses and underpasses has proven to be immensely successful. If implemented widely, such a system could reduce the extreme costs in animal lives and billions of dollars to humans.

And as climate change forces animals to migrate, their need to cross roads will only increase.

Watch this video from Vox to see how this problem—and the cost of addressing it—can be solved today.