CNN The reversal of Earth's magnetic poles, along with a temporary breakdown of the world's magnetic field about 42, years ago, could have triggered a raft of environmental changes, solar storms and the extinction of the Neanderthals, according to a new study. During this time, Earth's inhabitants would have been subjected to some dazzling displays -- northern and southern lights, caused by solar winds hitting the Earth's atmosphere, would have been frequent. The Earth's magnetic field protects us, acting as a shield against the solar wind a stream of charged particles and radiation that flows out from the sun. But the geomagnetic field is not stable in strength and direction, and it has the ability to flip or reverse itself. Some 42, years ago, in an event known as the Laschamp Excursion, the poles did just that for around years, before swapping back -- but scientists were unsure exactly how or if it impacted the world.
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How Carbon-14 Dating Works
From the end of austerity policies to the worrying rise of compulsory digitalization, Harvard Kennedy School faculty see a world changed by the coronavirus pandemic. For months, the coronavirus has crawled across the globe. One person at a time, it has passed through millions, reaching every corner of the earth.
The coronavirus pandemic has dramatically altered the way people have lived their lives over the past year. Lockdown has forced people away from pubs, gyms and shops and turned their attentions to online quizzes, zoom calls and Netflix binges. Office workers stopped commuting and began working from home while students became accustomed to learning away from the classroom. Shopping Covid has speeded up the gradual decline of the traditional high street in the eyes of many, but some experts suggest it could have a positive effect on local businesses. This may link with a drive for more sustainable consumption, less driving to big shopping centres.