Apr 12, 2012
A short press release in its PressPac earlier this week from the American Chemical Society mentioned intelligent alien dinosaurs. It was bound to pique the interest of the tabloids, wasn’t it? The Daily Mail ran with the bizarre headline:” Welcome new lizard overlords – New study suggests alien worlds super-intelligent dinosaurs.
Of course, the actual paper on which the release was based was nothing to do with dinosaurs or in fact any kind of alien, although it does mention them and the ACS PressPac item does lead on the dinosaurs and has some nice dramatic dino pictures! The paper was actually about chemists trying to understand why we have only one handed forms of amino acids and sugars on earth and how this may or may not have underpinned the emergence of life. An important but relatively mundane topic as far as the general public is concerned.
However, the ACS item and the paper from Ronald Breslow did stretch and extrapolate the concept quite wildly.
According to the PressPac: “Breslow describes evidence supporting the idea that the unusual amino acids carried to a lifeless Earth by meteorites about 4 billion years ago set the pattern for normal amino acids with the L-geometry, the kind in terrestial proteins, and how those could lead to D-sugars of the kind in DNA.”
That’s fine, nothing to do with dinosaurs or aliens. But, then it goes on to say:
“An implication from this work is that elsewhere in the universe there could be life forms based on D-amino acids and L-sugars. Such life forms could well be advanced versions of dinosaurs, if mammals did not have the good fortune to have the dinosaurs wiped out by an asteroidal collision, as on Earth. We would be better off not meeting them.”
Yes, the implication is that the chirality of putative amino acids on extraterrestrial worlds may well be of the opposite handedness, but how does that then make this fantastical leap to planets with intelligent alien dinosaurs? I really cannot see the connection between figuring out the origin of homochirality and extrapolating to alien dinosaurs…just bizarre. Breslow is an incredibly well-respected scientist, was he simply joking? Is this something to do with getting the “banned” word dinosaur back into education following the publication of the NYC DofEd’s 50 offensive words list?
Maybe on some alien world there is an emeritus dinosaur chemistry professor musing on the fact that the human tabloid media simply loves aliens and dinosaurs…or maybe not.
Breslow, R. (2012). Evidence for the Likely Origin of Homochirality in Amino Acids, Sugars, and Nucleosides on Prebiotic Earth Journal of the American Chemical Society DOI: 10.1021/ja3012897