HealthColour-changing spray tells you when food is past its best Food safety checks can be expensive and cumbersome. A new spray test for harmful bugs could improve hygiene and reduce waste ¿ìè¶ÌÊÓÆµ
EnvironmentCan you get meat without dead animals? Why farmers are wrong to say no Cattle ranchers in the US say beef must come from a slaughtered cow and not cells grown in a lab. The battle over the future of flesh has begun, says Sasha Chapman Comment