Maybe it’s not us. And yes, I know the whole issue is referred to as “climate change” nowadays, but the problem boils down to the fact that the earth appears to be warmer than it was in recent memory, so isn’t it really about “global warming” and all that that entails?
The point causing a lot of contention, of course, is the emission of greenhouse gases, particularly CO2, produced as a byproduct of energy production and transportation for starters. Human beings (and cows, but don’t get me started on that one), may play some part in the increase of CO2 in earth’s atmosphere, but maybe Mother Nature has a big hand in it too. The following is from a study appearing in the March 17, 2011, issue of the journal Nature. There are some surprising new findings and assertions here. Be sure to read the article , “Ancient ‘Hyperthermals’ as Guide to Anticipated Climate Changes: Sudden Global Warming Events More Frequent?”
In a nutshell, scientists at Scripps Institute of Oceanography at U.C. San Diego propose that intense periods of global warming, referred to as hyperthermal events, have taken place much more frequently in the past than previously thought, and that these periods last for approximately 40,000 years before the earth cools down again and repeats the cycle.
The Scripps scientists believe that a release of carbon dioxide from the deep oceans trigger the warming, and that the CO2 builds up when deep water currents stop flowing, which prevents the slow release of gases. Evidently, they build up until a massive release occurs, and this begins a warming cycle of 2-3 degrees F for the planet. Once the warming begins, it can take 40,000 years for the earth to cool down again. The scientists are currently working on the question of how long it takes for a warming event to occur. Is it centuries or decades or even faster than that? They’re examining finely layered 50 million year old sediment from the North Sea to find out.
Be sure to read the short, interesting, and non-technical article online: