Rock formation dating back 'hundreds of millions of years' shows historic global freeze - studyA Scottish and Irish rock formation dating back hundreds of millions of years could be evidence of what scientists call snowball Earth, a new study says.
Source: Rock formation dating back 'hundreds of millions of years' shows historic global freeze - study (https://news.sky.com/story/scotland-and-ireland-rock-formation-dating-back-hundreds-of-millions-of-years-shows-historic-global-freeze-study-says-13197643)