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Live at the Improv: DNA Polymerase
January 20, 2002
When a DNA reader hits an unfamiliar line, it improvises, reports EurekAlert: Prof. Zvi Livneh and Ph.D. student Ayelet Maor-Shoshani of the Biological Chemistry Department cut a DNA strand — from the bacterium E. coli — and inserted material similar to that which composes crude oil in between both its ends. As expected, the regular […]
Is Dark Matter Going Out of Style?
January 20, 2002
Dark matter has been a staple in cosmological theories for decades. One of the initial reasons was that galaxy rotation curves could not be explained without it. Another was that galaxy clusters, to be held together over long ages, needed more “stuff” to bind them. Finally, Big Bang cosmologists invoke copious amounts of dark matter […]
Fish Gill Evolves toward Tetrapod Ear?
January 20, 2002
“This is another nail in the coffin of the creationist view, in my opinion,” said the curator of Chicago’s Field Museum about a paper published in Nature,1 reported the Washington Post yesterday (see MSNBC News). Brazeau and Ahlberg of Uppsala University in Sweden examined the skull of Panderichthys, a Devonian lobe-finned fish, and found what […]
Scientists Yank Obamas Chain
January 20, 2002
51; As President Obama takes office today, having said he will restore science to its rightful place, he will have the scientific community anxious to get their agenda on his table. Nature News said, “Scientific groups are actively pushing their argument that modernizing the nation’s scientific infrastructure could help create the skilled workforce needed to […]
The Evolution of Morality
January 20, 2002
Can morality evolve in Darwin’s universe? Steven Pinker, evolutionary psychologist at Harvard, is just the man to ask. He wrote an 8-page article for the New York Times about it, facing the issues with frankness and forthrightness. To Pinker, as with other evolutionary psychologists, the “moral” behind morality is an evolutionary artifact of […]
Who Laid a Fossil Egg?
January 20, 2002
51; The news media are all excited that a pterosaur fossil has been found with an egg – a very rare association. To the media, like the BBC News, this can only mean one thing: the pterosaur was a female, and now they can differentiate female and male pterosaur fossils. They affectionately named the fossil, […]
Reality or Hubris in Scientific Claims?
January 20, 2002
51; The amount of trust the public puts in scientific claims stems partly from their incomprehensibility. The claims presented in scientific papers are often so dense and abstruse as to be unapproachable by all but specialists. Undoubtedly many people trust scientists because of their specialized education, their knowledge of mathematics, their special equipment, and their […]