article_snippet.sent: When CO2 drops ice caps grow large,’ Dr Herwatz explained.
article_snippet.sent: ‘Because ice is white, a lot of the incoming sunlight is reflected back to space and so large ice caps cause Earth to cool even further.
article_snippet.sent: ‘Climate modelling suggests that at a certain critical point, Earth Earth freezes over completely.
article_snippet.sent: Then, so much sunlight is reflected back to space (causing such a strong cooling effect) that Earth becomes a snowball.
article_snippet.sent: ’s light and making the planet ever-more cool, allowing the added ice to spread.
article_snippet.sent: ‘All you need is an extension of ice caps to a certain threshold level.
article_snippet.sent: [But] considering the man made input of CO2 into our atmosphere our are currently heading in another direction, hence a Snowball Earth climate is currently very unlikely.