Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: James Seagrove who wrote (1113929)	1/29/2019 12:32:15 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 1571318

Imagine that the human population was zero for most of that time, which is how we managed to "survive it all".

To: James Seagrove who wrote (1113929)	1/29/2019 2:09:02 PM
From: sylvester80	Read Replies (2) \| Respond to of 1571318

You must be a total moron and have manure for brains if you don't understand that the earth billions of years ago was uninhabitable because of high levels of CO2, but about 2.5 billion years ago, plants developed the ability to photosynthesise, creating glucose and oxygen from CO2 and water. This had a transformative impact on the atmosphere: as life developed, CO2 was consumed so that by around 20 million years ago its concentration was down to below 300ppm. So it took billions of years to put all that CO2 underground, and that in 150 years greedy POS man has managed to dug up that up and put them back into the atmosphere. The low levels of CO2 plays a role in climate because it is one of the atmospheric "greenhouse" gases (GHGs) which keep the Earth's surface about 33 degrees warmer than the -18C temperature it would be at were they not present. The greenhouse effect means that as the atmospheric loading of GHGs increases the surface temperature of the Earth warms. The overall increase in global temperature of about 1C over the past 150 years is almost entirely due to the human activities that have increasing amounts of atmospheric GHGs.Most significantly, the concentration of CO2 has been rising exponentially (at a rate of about 0.17% per year) since the industrial revolution, due mainly to the combustion of fossil fuels but also to large-scale tropical deforestation which depletes the climate system's capacity for photosynthesis. In 2015, it passed 400ppm, more than 40% higher than its pre-industrial value of 280ppm and a level that has not existed on Earth for several million years. So it takes a real moron dumbass with manure for brains to not understand simple things like that. bbc.com