The authors found that high top marginal income tax rates tended to decrease the share of entrepreneurship in a state.

FORBES: Don't Let The Pundits Fool You, A Tax Hike On The Rich Is Paid For By The Poor

And as science has discovered more about the workings of the climate, estimates of how much the earth will warm have tended to decrease.

ECONOMIST: If you want a cool planet, keep a cool head