Is it in the UK's interests to leave the EU? It depends on your values. The answer can't be read off of GDP statistics under various scenarios or some measures of global influence.

It is probably true that the economic benefits of being in the EU are a net positive to the UK, but a large number of people do not share in these benefits and the result is increasing inequality.

Obama's clean power plan, methane regulations, and increased fuel economy standards are about as good as our political system can do at this point in our history. Let's embrace these things, make them work, and push for more, rather than denouncing them because they're 9th best (which they are).

I worry that even well-intentioned attempts to "improve nature" (say by reducing suffering) will make things worse even in their own terms.

If you look globally you see a patchwork of jurisdictions (nations, states, provinces, cities) that have taken aggressive action on climate change, and a patchwork of jurisdictions that have not. These various policies reflect the politics of each jurisdiction and the values of its citizens.

I think when it comes to climate change, the single most important thing in the world is for the United States' Congress to pass an effective bill that will put a price in carbon because if it starts costing something to emit carbon, this will provide an incentive, people do act on the basis to some extent of economic incentives to emit fewer greenhouse gases.

Every country now has its own domestic political debate about how to respond to climate change. This is where the action is.