The One or The Many?
The debate rages. A PHYSORG article arrived late yesterday detailing results of U Missouri-Columbia research that indicates the dinosaur extinction 65MYA was the result of only one meteorite strike.[Link] This is in dissension with another research [Link] by folks at Princeton U that advances the extinction was the result of the combination of global climate change, volcanism, and two (2) meteorite strikes.
Regardless, the dinosaurs as well as most other animal species went extinct allowing mammals to expand into new niches and ourselves to result.
In a completely unrelated PHYSORG article [Link] researchers at the Australian Commonwealth Scientific and Industrial Organization have measured accelerating carbon dioxide emission. They report that during the 1990’s the CO2 emission rate increased by a fraction of 0.01 per year. In the first five years of the Twenty-first century the CO2 emission rate grew by a fraction 0.025!
