According to an investigation by the New York Times, the US is using up its groundwater at an alarming rate, threatening to squander a resource that is the backbone of the country’s farming system.

Data analysis found that in the past decade, four of every 10 groundwater sites in the country hit all-time lows. This is already having an impact on crop yields and on infrastructure, with so much water being pumped out of California, Utah, and Texas, that roads have buckled and building foundations cracked.

The New York Times Daily podcast supplemented this reporting with an in depth look at one of the United States’ driest and fastest growing state, Arizona.