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Oil – Where did it come from?

Guest post by David Middleton Introduction I am a petroleum geologist/geophysicist with about 36 years of experience in oil & gas exploration mostly in the Gulf of Mexico.   In light of Andy May’s recent post, Oil – Will we run out?, I thought I might post an essay on oil formation. Over the past six years,…

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Fake News: Fukushima Edition

Guest post by David Middleton Radiation levels recorded inside Fukushima’s crippled nuclear power station are at the highest levels since its catastrophic meltdown in 2011. Tokyo Electric Power Co. Holdings Inc (Tepco) said the radiation level in the containment vessel of Reactor 2 in the Fukushima No 1 power plant had reached a maximum of…

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Climate Sensitivity: A Simple Inverse Model

Guest post by David Middleton Models often get a bad rap among skeptics, largely because climate models have demonstrated an epic failure in predictive skill.  However, models are extremely valuable scientific tools, particularly when used heuristically. Models are learning tools. Generally speaking models fall into two general categories: Forward problems. Inverse problems. Inverse problem From…