discovery of nanodiamond rich layer in the greenland ice sheet [...]
no evidence of nanodiamonds in Younger Dryas sediments to support an impact event [...]
Leroy Ellenberger
Dave,
As you probably know, the Sep/Oct Skeptical Inquirer (whose cover features Martin Gardner) contains letters by Clark Chapman and Paul Hilfinger, reacting to your May/Jun article on the claimed impact at the Younger Dryas boundary (also with a letter from Mark Bosslough commenting on his sidebar about scientists changing their minds, [...]
Senator Bill Nelson (D-Florida)
Sec.201 (b) UNITED STATES HUMAN SPACE FLIGHT CAPABILITIES.—Congress reaffirms the policy stated in section 501(a) of the National Aeronautics and Space Administration Authorization Act of 2005 (42 U.S.C. 16761(a)), that the United States shall maintain an uninterrupted capability for human space flight and operations in low-Earth orbit, and beyond, as an essential instrument [...]
Discovery of a nanodiamond‑rich layer in the Greenland Ice Sheet
Andrei V KURBATOV, Paul A MAYEWSKI, Jørgen P STEFFENSEN, et. al.
Accepted 19 August 2010, Journal of [...]
Unpredicted Impacts on Jupiter
Video of the event
Impact Hypothesis Loses Its Sparkle: Shock-Synthesized Diamonds Said to Prove Catastrophic Impact Killed Off N. American Megafauna Can’t Be Found
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Tyrone Daulton is pictured with the transmission electron microscrope he used to search in vain for shock-synthesized nanodiamonds, evidence that a extraterrestrial object such as a meteorite killed off North American megafauna. (Credit: Tyrone Daulton)
ScienceDaily (Aug. 30, [...]
I haven’t blogged in a few days while investigating the odd features of the Egyptian-Libyan Sahara. I first started poking around this subject following the announcement of the fresh and appetizing Kamil Crater in the central-western Egyptian Sahara. This got me to looking into the subject of other purported craters in the Sahara. I had no idea that a controversy [...]
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