Methane, the powerful, invisible greenhouse gas, has been leaking from oil facilities since the first wells were drilled more than 150 years ago. Most of that time, it was very difficult for operators to measure any emissions accurately — and they had little motivation to, since regulations are typically weak.
Now, technology is catching up just as there is growing alarm about methane’s role driving global warming. A Canadian company, GHGSat, last month used satellites to detect what it has called the smallest methane leak seen from space and has begun selling data to emitters interested in pinpointing leaks that previously were harder to spot.
