Some big stories came out this week.
A fossil that was celebrated last year as a possible “missing link” between humans and early primates is actually a forebearer of modern-day lemurs and lorises, according to two papers by scientists at The University of Texas at Austin, Duke University and the University of Chicago. In an article now available online in the Journal of Human Evolution, four scientists present evidence that the 47-million-year-old Darwinius masillae is not a haplorhine primate like humans, apes and monkeys, as the 2009 research claimed. They also note that the article on Darwinius published last year in the journal PLoS ONE ignores two decades of published research showing that similar fossils are actually strepsirrhines, the primate group that includes lemurs and lorises. ‘Many lines of evidence indicate that Darwinius has nothing at all to do with human evolution,’ says Chris Kirk, associate professor of anthropology at The University of Texas at Austin. ‘Every year, scientists describe new fossils that contribute to our understanding of primate evolution. What’s amazing about Darwinius is, despite the fact that it’s nearly complete, it tells us very little that we didn’t already know from fossils of closely related species.’ ..
And, the BBC reports on March 4th that
An international panel of experts has strongly endorsed evidence that a space impact was behind the mass extinction event that killed off the dinosaurs. They reached the consensus after conducting the most wide-ranging analysis yet of the evidence. Writing in Science journal, they rule out alternative theories such as large-scale volcanism. The analysis has been discussed at the 41st Lunar and Planetary Science Conference (LPSC) in the US. A panel of 41 international experts reviewed 20 years’ worth of research to determine the cause of the Cretaceous-Tertiary (K-T) mass extinction, around 65 million years ago. The extinction wiped out more than half of all species on the planet, including the dinosaurs, bird-like pterosaurs and large marine reptiles, clearing the way for mammals to become the dominant species on Earth. Their review of the evidence shows that the extinction was caused by a massive asteroid or comet smashing into Earth at Chicxulub on Mexico’s Yucatan Peninsula…
While creationists are sure to glom onto these stories as evidence that any change of opinions over time means entire disciplines are simply nonsense, both of these stories show science incorporating new information, and improving with age.
Contrast that with creationism or “intelligent design,” for which nothing becomes clearer or better understood over time. Hmm - what is the actual mechanism by which the Designer infuses new designs into actual, living organisms? Search me!