Historical smells no longer belong to the past. Methane, however, is odourless, and usually slips undetected into the atmosphere.
Traditional methods of recovering the greenhouse gas, where people with handheld devices scour rubbish depots or faulty pipelines, are expensive.
Yet methane can be deployed as a sustainable energy source to produce hydrogen. Cue a Michigan-based startup which has developed a patented drone complete with gas sensors and laser steering.
Controlled by preprogrammed software, the drone covers large surface areas close to the ground. Data collected on methane concentration are then sent to the Cloud, and visible by app.
Bacteria, meanwhile, turns methane into bio-materials, and the key to reducing production in cows and sheep may lie in baby kangaroos.
