Browsing All Posts published on »May, 2011«

Milloy proves he’s either incompetent or a liar in latest op-ed

May 20, 2011

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In his Washington Times op-ed titled 2012 GOP guide to the climate debate,” commentator Steve Milloy made a large number of claims that are demonstrably wrong – 18 at last count. But one of his claims relating to the illegal hack and release of climate scientists’ emails dubbed “Climategate” casts a shadow over all the […]

Milloy’s latest climate op-ed riddled with errors

May 18, 2011

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Today, the Washington Times ran an op-ed by science-denier-for-hire Steve Milloy titled “2012 GOP guide to the climate debate.” Based on the number of errors and irrelevancies masquerading as serious concerns I discovered while reading it, the Washington Times should have titled the op-ed “How to lie to voters about climate disruption.” Here’s a brief […]

Venus’ climate V: How scientists know Venus’ surface temperature is a result of greenhouse heating

May 6, 2011

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On Monday, I wrote that there were only two possibilities for why Venus’ surface temperature is so hot – either something internal to the planet’s crust and core was keeping Venus hot, or something about the atmosphere was. Tuesday I showed that it wasn’t internal heating. Wednesday I disproved the “Venus formed recently” hypothesis. And […]

Venus’ climate IV: How scientists know Venus’ surface temperature isn’t from a “recent” astronomical collision

May 5, 2011

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Artist rendition of celestial impact that formed the Moon. Fahad Sulehria, http://www.novacelestia.com The images returned by various robotic probes to Venus suggest that the planet’s crust is geologically young – less than a billion years old. Scientists currently believe that, because Venus has no continental drift to speak of, heat generated by radioactive decay in […]

Venus’ climate III: How scientists know Venus isn’t geologically young

May 4, 2011

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Simulation of planetary accretion (Ken Rice, UC-Riverside) Yesterday we found that, for Venus to be hot due to internal heating, either the planet’s core would have to be a star, its crust would have to be less than a meter thick, or its crust would have be composed of diamond. None of these is remotely […]

Venus’ climate II: How scientists know Venus’ surface temperature isn’t from internal heating

May 3, 2011

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Hemispheric view of Venus produced by Magellan. One of the hypotheses proposed by climate disruption deniers for Venus’ hot surface temperature is that Venus has an unusually hot core. The logic goes like this – if the core is hot enough, then the surface temperature would be from heat bleeding through the crust instead of […]

Venus’ climate I: How scientists know Venus’ surface is unusually hot

May 2, 2011

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Ultraviolet image of Venus’ clouds as seen by the Pioneer Venus Orbiter, Feb. 26, 1979 (NASA). Scientists have known that the surface of Venus is extremely hot since the first probes flew by the planet in the 1960s. Venus’ hot surface is presently understood to be a direct result of the composition of the atmosphere […]