Carbon dioxide emissions cap and trade

California, Ontario and Quebec are cooperating on a successful program to reduce carbon emissions through a cap and trade mechanism. Ontario should collaborate with other California programs such as electric vehicles and promoting household photovoltaic systems with energy storage. Read More

Permafrost locks in tons of mercury–until it thaws

The Arctic permafrost contains nearly twice as much mercury as all other soils, the ocean, and the atmosphere combined. The permafrost is thawing--potentially releasing large quantities of this neurotoxin into the environment. The Minamata Convention on Mercury--which came into force last year and which is intended to curtail mercury emissions from anthropogenic sources like coal-fired power plants, may prove to be almost irrelevant. Read More

Natural gas – a bridge too far

Natural gas produced by fracking has a substantial environmental impact. Leaks of toxic 'produced' water into streams and groundwater resources. And emissions of fugitive methane from the frack site and the gathering system more than offset its advantage over coal at the power plant. Read More