A team of researchers from Sydney’s University of New South Wales and the South Australian Museum have investigated how the reversal of Earth’s magnetic pole about 42,000 years could have changed earth’s atmosphere. CNN reports: “Using the ancient trees we could measure, and date, the spike in atmospheric radiocarbon levels caused by the collapse of Earth’s magnetic field,” Chris Turney, a…
Tag: peat
Upheaval and extinctions linked to magnetic reversal 42,000 years ago
42,000 years ago, a breakdown in Earth’s magnetic field led to environmental catastrophes and mass extinctions. Source: https://earthsky.org/earth/magnetic-field-reversal-42000-years-ago-neanderthal-extinction…
Another intense summer of fires in Siberia
Following an active 2019 season, fires in Siberia in 2020 have again been abundant and widespread, and have produced abnormally large carbon emissions. Source: https://earthsky.org/earth/intense-fires-siberia-summer-2020…
‘Zombie’ fires are burning the Arctic after smouldering under snow
Unprecedented Arctic fires from last summer appear to have smouldered in the underground peat of the tundra through winter and reignited this month as snow melted Source: https://www.newscientist.com/article/2243591-zombie-fires-are-burning-the-arctic-after-smouldering-under-snow/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Jupiter gives us Pluto in 2020
Jupiter and Pluto are near each other on the sky’s dome right now, and they will rendezvous 3 times in 2020. In fact, the 2020 triple conjunction of Jupiter and Pluto may well present the best Jupiter-Pluto alignment for centuries to come. Source: https://earthsky.org/astronomy-essentials/how-to-see-pluto-in-the-night-sky…
Spectacular! Don’t miss Venus and Jupiter
The sky’s 2 brightest planets – Venus and Jupiter – will meet for conjunction on November 24, 2019. Watch them draw closer in the west after sunset this weekend! Source: https://earthsky.org/tonight/venus-jupiter-conjunction-on-november-24…
Did asteroid collision trigger Earth’s abrupt cooling 12,800 years ago?
Why did Earth’s climate rapidly cool 12,800 years ago? New evidence suggests that a comet or asteroid collision is to blame, with support coming from the bottom of a South Carolina lake. Source: https://earthsky.org/earth/asteroid-comet-younger-dryas-abrupt-cooling…