The interest in hydrogen vehicles is largely because they are considered emission-free, with only water vapour coming out of the tailpipe. Under the hood of one of these hydrogen vehicles, electricity is produced from the chemical reaction when hydrogen combines with oxygen. (Rafferty Baker/CBC)Hydrogen heatingFor years, hydrogen fuel cells were hailed by scientists as a breakthrough technology to cut traffic pollution. Last month, Enbridge began operating what the company calls the first major energy storage facility using hydrogen in North America. "We're getting this sort of disruption in what was really a pretty stable, monotonous electricity system for a long time.

Source: CBC News August 19, 2018 08:00 UTC