Has Al Gore mentioned this as a possible threat to the planet?
The eruption of a “supervolcano” hundreds of times more powerful than conventional volcanoes – with the potential to wipe out civilisation as we know it – is more likely than previously thought, a study has found.
An analysis of the molten rock within the dormant supervolcano beneath Yellowstone National Park in the United States has revealed that an eruption is possible without any external trigger, scientists said.
Scientists previously believed many supervolcanic eruptions needed earthquakes to break open the Earth’s crust so magma could escape. But new research suggests that this can happen as a result of the build-up of pressure.
Supervolcanoes represent the second most globally cataclysmic event – next to an asteroid strike – and they have been responsible in the past for mass extinctions, long-term changes to the climate and shorter-term “volcanic winters” caused by volcanic ash cutting out the sunlight.
The last known supervolcanic eruption was believed to have occurred about 70,000 years ago at the site today of Lake Toba in Sumatra, Indonesia. It caused a volcanic winter that blocked out the sun for between six to eight years, and resulted in a period of global cooling lasting a thousand years.
A supervolcano under Yellowstone Park in Wyoming last erupted about 600,000 years ago, sending more than 1,000 cubic kilometres of ash and lava into the atmosphere – about 100 times more than the Mount Pinatubo eruption in the Philippines in 1982, which caused a noticeable period of global cooling.
Wait, what? A noticeable period of global cooling? How come nobody has mentioned this the past 32 years? Who knows, maybe it’s a reason why much of the United States today is mired in subzero weather.
Millions of people across the United States on Monday were braced for a “life-threatening” bitter Arctic blast that could send temperatures plummeting to their coldest in 20 years.
The northeastern United States and parts of Canada have endured heavy snow and deadly sub-zero conditions since the start of the year, but the deep freeze is now moving through much of the country east of the Rocky Mountains.
The wind chill from the rare “polar vortex” could make it feel as cold as -60 Fahrenheit (-51 Celsius) in places, weather forecasters say, prompting authorities to warn residents to stay indoors and stock up on food.
“Cold temperatures and gusty winds associated with an arctic air mass will continue dangerously cold wind chills as far south as Brownsville, Texas [on the border with Mexico] and central Florida,” the National Weather Service said.
Dangerous wind chills in Central Florida? Hmm. Speaking of Gore, he’s been noticeably silent about the brutal cold, not to mention the folly of the climate clowns getting stick in the ice in Antarctica.