Just like pizza sauce: “Natural gas is mostly methane like pizza sauce is mostly tomatoes,” lead author Drew Michanowicz, a visiting scientist at the Harvard T.H. Trouble for the Eastern Seaboard: Hurricane frequency is increasing in the North Atlantic, according to a study published on Monday in Nature Climate Change. We still don’t know to what extent human-caused climate change is behind the increase in tropical cyclones — which makes us more vulnerable to them, according to a study in the inaugural edition of Environmental Research: Climate.