3 ms·This event lasted for "800,000 years", based in the article.by kuu 7y agoThis event lasted for "800,000 years", based in the article.baq 7y agoexactly correct - compared to our situation where we have to get ~5% of it done in ~30 years, we're in trouble.Hitton 7y agoThere is about 400 ppm of carbon dioxide in atmosphere now.