The other group maintains that recent human activities ranging from physical coral destruction through pollution to predator removal have triggered these events.
The banks that brought on the global financial crisis got billions while a tiny bit went to the homeowners and victims of the same banks' predatory lending practices.
As urban land becomes increasingly scarce, in the absence of adequate clean-up, pollution incidents associated with land contamination in China are increasing.
Cai Lei's hyper realistic sculptures enthrall us with a kind of morbid fascination that draws us to appreciate its eccentric beauty along with the brutal splendour of reality.
"Only a small percentage of alien species cause problems in their new habitats,'' said Don Smith, professor of ecology and evolutionary biology at the University of Tennessee.
One problem with the kit-car business, though, is that the vehicles are typically modeled after famous racing and sports cars, making lawsuits and license fees a constant burden.
Every time global financial markets go into turmoil, most recently thanks to the US sub-prime mortgage fiasco, voices rise to demand global regulation.