Analysis Of The Article 'Why Ancient Earth Was So Warm'

In the article “Why Ancient Earth Was So Warm” the key point was to explain why early earth was as warm as it was, without a strong sun. The researchers, Eric Wolf and Brian Toon, go on to explain that the sun was about 70-80 percent as bright as it is today. So it would not warm the earth as much. That was then named the faint young sun paradox. The article then explains how the two greenhouse gases carbon dioxide, and methane could have trapped heat in the atmosphere. This would have all been possible and happened during the archean eon.
One thing this article explained well is how much of Co2 and methane combined would have kept heat trapped in the atmosphere. Just to keep earth above freezing, it would take about 75 times of Co2 as there