New York City’s $32 million effort to reduce its rat population includes reducing their food supply with impenetrable garbage cans and smoking them out of their burrows with dry ice. And while it is working, city officials said climate change could make it harder to keep the fast-breeding vermin in check. Warmer winters like this season’s, which didn’t have sustained below-freezing temperatures, increase rat populations.

Source: Wall Street Journal April 06, 2019 15:56 UTC