A dog searching for a lost child is typically given an item of clothing to smell. But what does that scent “look” like? To find out, scientists tested 48 dogs, half of which had special police or rescue training. Jeff …
The next time a police officer in black-tinted glasses gawks at you, they may be pulling up your personal information. Railway police in Zhengzhou, the capital of central China’s Henan province, are the first in the country to start using …
