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'Warming' questions: Science vs. politics

Climate alarmists who blame mankind's "smokestack" emissions betray their unscientific slant by ignoring the effects of pre-industrial clearing of forests, which a new study documents.

Six French researchers report in the journal Science that ancient sediment cores from the Congo River's mouth show a significant human role "in changing the landscapes of Central Africa" about 3,500 years ago, according to Scientific American.

The cores show river sediments increased suddenly, without increased rainfall, at the time when the Bantu people "brought farming into the region."

Clearing forests to plant oil palm, pearl millet and yams -- "crops that need plenty of sunlight" -- they helped create African savannas, previously thought to be the result of "climate change" only.

Scientific American says the paper doesn't settle which came first, savannas or agriculture. But by demonstrating that clearing forests -- a practice that continues today -- can change climate, the paper exposes a glaring blind spot in global-warming alarmists' "reasoning."

It's a reminder that "settled" science about incredibly complex ecosystems is anything but settled -- and that when politics enters scientific debate, such debate becomes anything but serious and scientific.

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