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It mightn’t be quite a case of the flapping of a Brazilian butterfly’s wings causing a tornado in Texas, but a team of climate researchers has found a correlation between melting Arctic sea ice and the formation of tornadoes in the United States, with fewer tornadoes being reported when northern sea ice is unseasonably low.

"A relationship between Arctic sea ice and tornadoes in the US may seem unlikely," says study co-author Jeff Trapp, an atmospheric sciences researcher with the University of Illinois at Urbana. "But it is hard to ignore the mounting evidence in support of the connection."
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Despite the pledges and measures being taken to address the rising concentrations of atmospheric carbon dioxide, CO2 levels continue to climb. This trend is causing concern amongst climate researchers, including worries that limiting global warming’s effects to two degrees Celsius, as per the Paris Agreement, might still trigger a cascade effect that would lead to a "Hothouse Earth" situation that we would have no control over.
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A new study has found that the temperature increases from global warming may be twice as bad over what previous climate studies have forecast. This study made use of historical data from previous geological periods when Earth’s climate was 0.5°C-2°C warmer than the 19th Century’s pre-industrial average, illustrating that the consequences of runaway global warming could spell the collapse of many ecosystems, ranging from the Sahara Desert becoming green, to tropical regions converting to a fire-prone savanna.
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