“@andrewliebchen @_chrissimmons Exactly. Then no need for clean energy subsidies, as externality is p…”

“@_ChrisSimmons A carbon tax would affect coal even more than gasoline, so electricity would also bec…”

“One often hears that there is no point in a US carbon tax unless China acts. Well, they just did htt…”

“Rocket static fire @SpaceX Cape Canaveral launch pad looks good. Engines generated 433 tons of thrus…”