Images of Earth taken at night are revolutionizing our ability to measure and understand nearly every dimension of human activity on Earth and allow us to get a glimpse into human-Earth…

Making a link between a city’s density and its vulnerability to epidemics may seem like an obvious connection. But it may, in fact, be off the mark.

On any rational cost-benefit basis, investing in preparedness, whether for pandemics or natural hazards, is possibly one of the best investments any country can make. A dollar spent on…

As the world urbanizes rapidly, [[tweetable]]international experience has shown that economic activities concentrate in a relatively small number of places[[/tweetable]] – it is estimated that…