Flower-rich road verges may attract hungry bumblebees, but at the same time, they can be dangerous for the buzzing insects—if traffic is too heavy. The new research from Lund University in Sweden examined the role roadsides play for bumblebees. The results show that road verges can be a dangerous environment for insects searching for food. The team used specially trained dogs that had learned to sniff out bumblebee nests to assist them. The survey covered 60 road verges in southern Sweden and compared the number of dead and living bumblebees along roads with varying traffic intensities.