Lords of the zings
I don’t know why the new papers about the “hobbit,” the 2003 find of tiny ancient bones from the Indonesian island of Flores, have made such a splash. No, I take that back. I do know. But it’s still depressing.
The researchers posit that the tiny hominin, designated LB1, suffered from developmental abnormalities, probably Down syndrome specifically. But from almost the first moment of the fossil’s discovery, a vocal contingent of paleoanthropologists, more than a few and not fringe scientists, declared that the hobbit was probably not the new human species its discoverers claimed, Homo floresiensis. Instead, they argued, LB1 was H. sapiens with some kind of developmental disorder.
By and large, the journalism I’ve read about the new papers, which appeared in the Proceedings of the National Academy of Sciences August 4, includes none of that background. One exception is the piece by John Noble Wilford, at the New York Times, who has covered this story from the outset. Another is by Bianca Nogrady, writing at ABC Science. (This is the Australian ABC; see below for why Australia has a special interest in this story.)
Most news stories treated the new studies as an entirely novel and startling bolt from the blue. I know I should probably cut today’s journalists a bit of slack because they are operating under frantic constraints of time and space. But it’s distressing that hardly any bothered with the dead-simple step of googling LB1’s history. Or even Wikipedia. The Wikipedia entry seems to have been written by partisans of the new species hypothesis who are declaring the question settled, which it isn’t. But at least the entry describes the dispute.
Blogging, con and pro
Not a lot of blogging yet, but I guess it’s early days. Two of the researchers, Maciej Henneberg and Robert B. Eckhardt, crowed about their new PNAS papers at The Conversation. They do acknowledge that there were doubters from the beginning, but their chief purpose is to taunt the opposition. Example: “Analogies with characters in works of literary fiction are marketing devices.”
Chris Stringer, star paleoanthropologist at the Natural History Museum, London, rose to the defense of H. floresiensis at the Museum’s blog, NaturePlus. “In my view this paper does not provide a sound basis to challenge the basic conclusion that a primitive human-like species persisted on the island of Flores within the last 100,000 years.”
Paleoanthropologist Alphacaeli posted a brief riposte at The Memory Palace, arguing that LB1 couldn’t have had Down syndrome because “it’s phenomenally improbable that it would have lived to adulthood.” (From tooth wear, LB1 is believed to have been about 30.) I agree that it would be unusual, but by no means impossible. Like most disabilities, Down syndrome is quite variable. Many people with Down syndrome hold simple jobs, live fairly long lives, and fit into their communities just fine.
Alphacaeli also says, “Don’t even get me started on the discussion of humeral morphology. . .” I very much wish she had gotten started. She specializes in shoulder biomechanics, and could presumably provide expert commentary on the paper’s analysis of LB1’s arm bone.
I should add a geographical footnote here. Alphacaeli is Australian, as is Henneberg. LB1 was discovered in an expedition led by other Australians. Some of what we’re seeing here is an internecine feud among Australian paleoanthropologists.
I am privy to no details, but as you may know, there’s no more combative scientific discipline than paleoanthropology. The rest of us can only look on in awe and delight. I am myself most grateful for the controversy because it has contributed several deposits to my checking account over the years. Here’s one of my pieces, a 2006 feature from open-access PLOS Biology. It’s a roundup of the many theories about LB1. As you will see, the dispute has not advanced a whole lot in the last 8 years.
Are we there yet?
Yes, we’re there. Well, nearly. After a 10-year 4 billion-mile journey, the European Space Agency’s Rosetta probe got near enough to comet 67P/Churyumov-Gerasimenko early this year to wake up and start shooting pics. Rosetta is now about 100 km from its target and will send a lander to the comet’s surface in November.
The lander, called Philae, is supposed to tether itself to 67P/Churyumov-Gerasimenko in order to keep from flying back into space due to the comet’s low gravity. Philae is scheduled to examine the comet’s surface composition and structure, and even take samples to study up close.
Meanwhile, in other comet news, NASA has decided that its Mars orbiters are probably not in danger from comet Siding Spring after all. That comet is due to fly near Mars in October. Karl Battams explains at a Planetary Society Guest Blog. There’s said to have been some worry about a close call. But given its recent public relations history–remember the arsenic bug?–I can’t help wondering if NASA is engaging in headline-concocting to compete with the ESA plan to actually land on a comet.
The most crazy bonkers comet in the solar system
Rosetta is in orbit around the comet, although it’s not really an orbit, Phil Plait tells us at Bad Astronomy. At present the two are somewhere between Jupiter and Mars. It’s been a roundabout journey for Rosetta, taking so long because it involved slingshot maneuvers around the Earth and Mars to save fuel, John Timmer explains at Ars Technica.
Knight Science Journalism Tracker Charlie Petit says, “The mission is clever, difficult, complex, and inherently appealing.” Yup. He’s got links to several stories and other resources. The photos taken a few days ago are spectacularly sharp, and we are told they will be even higher-res soon. Marc Boucher has posted several at On Orbit.
Photos also, plus a video, at io9. Observers keep likening 67P/Churyumov-Gerasimenko’s shape to a rubber ducky. I don’t see it myself, but the shape is certainly odd. Robbie Gonzalez quotes ESA senior scientist Mark McCaughrean as calling it “the most crazy bonkers comet in the solar system.”