ScienceNew weapon against ratsTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceLaura Postma01/02/2017January 2, 2017The US city of Chicago is struggling with a growing rodent problem. Apart from using the regular vermin pesticides, the city’s Bureau of Rodent Control is trying something new: dry ice.https://p.dw.com/p/2V82nAdvertisement