Farming with Tom, Dick and Harry

SLOWLY BUT surely, a spidery machine about the size of a golf cart swings an electrode over a tray of plants. Every few seconds there is a small puff of smoke as a weed keels over, having been zapped with a high voltage. The device doing the zapping is a prototype weeding robot developed by […]

The methane hunters

WHEN SCANNING for emissions from a mud volcano in western Turkmenistan in January 2019, a satellite called Claire came across a large plume of methane drifting across the landscape. The discharge appeared to originate from a gas pipeline at the nearby Korpezhe oil and gasfield. Two more large plumes were also spotted in the area, […]