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Seven facts you need to know about the Arctic methane timebomb | Nafeez Ahmed | Environment | theguardian.com

Debate over the plausibility of a catastrophic release of methane in coming decades due to thawing Arctic permafrost has escalated after a new Nature paper warned that exactly this scenario could trigger costs equivalent to the annual GDP of the global economy.

A modern Maunder Minimum would not stave off global warming - Schultz - 2013 - Eos, Transactions American Geophysical Union - Wiley Online Library

Researchers estimate that the Maunder Minimum could have caused a reduction in solar irradiance of around 0.01% to 0.25%, a shift that contributed to a drop of globally averaged surface air temperature of a few tenths of a degree.

The First Global Warming Prophet: Was He the Most Accurate? | Power Line

The modest temperature increase suggested by Callendar, and validated so far by observation, poses no threat, and won’t bring about any of the catastrophic consequences that the alarmists are paid to predict. Callendar himself thought the effect of increasing CO2 in the atmosphere would be salutary