Citizens of Churchill in Northern Manitoba, Canada, had to learn how to scare polar bears away from their home town.

Polar bears researchers found out that because of melting Arctic ice and longer summer season, polar bears are being exposed to hunger and above average temperatures in the northern hemisphere.

Churchill in northern Manitoba bills itself as the polar bear capital of the world and its tourism-based economy depends on it. But as climate change forces the polar bears inland in search of food, attacks on humans are increasing.

Can this small community continue to co-exist with the world's largest land predator? Suzanne Goldenberg reports from Churchill where its bear alert programme uses guns, helicopters and a polar bear jail to manage the creatures.

This trip was supported by Explore.org, Frontiers North and Polar bears International