Urban leopards, moving islands and America's largest homeless camp

Other cool stuff we found last week.

Here's why it matters where we draw city limits

The greenbelt isn't the only thing holding cities back.

Improving your neighbourhood could cut your risk of diabetes by 12%

Death by zipcode.

In Australia, urbanisation is bringing animals and diseases closer to home

But it makes outbreaks easier to treat, too.

India's sixth city is planning the world's tallest skyscraper

Race to the top.

This new rooftop mirror material can beam heat from buildings out into space

Turning the "coldness of the universe" to our advantage.

Manhattan's Lowline would be the world's first underground park

Because who needs sunshine?