When ruminants digest, they belch out methane. As a result, cattle cause a greater global greenhouse effect than the operation of all cars. The usual recipe is: eat less meat. But there is another solution: feed a handful of red algae per cow per day.
When it comes to high-tech, cattle have to put up with a lot these days. In many barns, cameras capture the cows' udders as they enter the milking parlour. Robotic arms attach the teat cups and sensors measure the quality of the milk. Some cows get an automatic brush massage beforehand. In the vastness of Kentucky, researchers train drones
