Saboteur Pruitt used a personal email account for public business, and ignored the EPA requirement to send in those emails within 20 days.

It's far from the worst thing he did. It matters as an instance of the Republican double standard.

Global heating will wipe out lobsters off the coast of Maine.

Although new airliners are more fuel-efficient than older ones, the number of new planes is too small to make much difference in efficiency.

Even if the whole fleet became substantially more efficient, the increase in flying would cancel that out. We need to tax jet fuel enough to stop the increase.

When the EU tried to start this, the US slapped it back.

Shell's management says that Shell was closely involved in writing the Paris climate agreement. It seems Shell wants to make cap-and-trade the only form of regulation or measure used to reduce emissions.

This would be a grave policy mistake, because cap-and-trade systems are vulnerable to being gamed. If companies find loopholes, or insert loopholes, they could then obey the rules without actually reducing emissions.

It used to be that millions of monarch butterflies lived through the California winter. Now there are only 30,000.

This creates a danger they could be wiped out in various ways.