Monthly Archives: December 2012

Actual Mars Rover Press Conference and Release

Despite rumors to the contrary, NASA actually does real, non-Parody science! And the famous press conference about Mars Rover happened today, and it was exactly as I predicted. Very, very interesting.

PASADENA, Calif. – NASA’s Mars Curiosity rover has used its full array of instruments to analyze Martian soil for the first time, and found a complex chemistry within the Martian soil. Water and sulfur and chlorine-containing substances, among other ingredients, showed up in samples Curiosity’s arm delivered to an analytical laboratory inside the rover.

Detection of the substances during this early phase of the mission demonstrates the laboratory’s capability to analyze diverse soil and rock samples over the next two years. Scientists also have been verifying the capabilities of the rover’s instruments.

Curiosity is the first Mars rover able to scoop soil into analytical instruments. The specific soil sample came from a drift of windblown dust and sand called “Rocknest.” The site lies in a relatively flat part of Gale Crater still miles away from the rover’s main destination on the slope of a mountain called Mount Sharp. The rover’s laboratory includes the Sample Analysis at Mars (SAM) suite and the Chemistry and Mineralogy (CheMin) instrument. SAM used three methods to analyze gases given off from the dusty sand when it was heated in a tiny oven. One class of substances SAM checks for is organic compounds — carbon-containing chemicals that can be ingredients for life.

“We have no definitive detection of Martian organics at this point, but we will keep looking in the diverse environments of Gale Crater,” said SAM Principal Investigator Paul Mahaffy of NASA’s Goddard Space Flight Center in Greenbelt, Md.

Curiosity’s APXS instrument and the Mars Hand Lens Imager (MAHLI) camera on the rover’s arm confirmed Rocknest has chemical-element composition and textural appearance similar to sites visited by earlier NASA Mars rovers Pathfinder, Spirit and Opportunity.

Curiosity’s team selected Rocknest as the first scooping site because it has fine sand particles suited for scrubbing interior surfaces of the arm’s sample-handling chambers. Sand was vibrated inside the chambers to remove residue from Earth. MAHLI close-up images of Rocknest show a dust-coated crust one or two sand grains thick, covering dark, finer sand.

“Active drifts on Mars look darker on the surface,” said MAHLI Principal Investigator Ken Edgett, of Malin Space Science Systems in San Diego. “This is an older drift that has had time to be inactive, letting the crust form and dust accumulate on it.”

CheMin’s examination of Rocknest samples found the composition is about half common volcanic minerals and half non-crystalline materials such as glass. SAM added information about ingredients present in much lower concentrations and about ratios of isotopes. Isotopes are different forms of the same element and can provide clues about environmental changes. The water seen by SAM does not mean the drift was wet. Water molecules bound to grains of sand or dust are not unusual, but the quantity seen was higher than anticipated.

SAM tentatively identified the oxygen and chlorine compound perchlorate. This is a reactive chemical previously found in arctic Martian soil by NASA’s Phoenix Lander. Reactions with other chemicals heated in SAM formed chlorinated methane compounds — one-carbon organics that were detected by the instrument. The chlorine is of Martian origin, but it is possible the carbon may be of Earth origin, carried by Curiosity and detected by SAM’s high sensitivity design.

“We used almost every part of our science payload examining this drift,” said Curiosity Project Scientist John Grotzinger of the California Institute of Technology in Pasadena. “The synergies of the instruments and richness of the data sets give us great promise for using them at the mission’s main science destination on Mount Sharp.”

That’s the text of the press release. Click here to see the pretty pictures that go along with it.

This was not an easy thing to write

My friend, Aslhey Miller, just wrote this thing and it is important. She has fallen in love with someone that her father does not approve of, and he, her father, has gone ahead and “disowned” her (a strange word when you think about it) for that reason. You should read this because it is socially and politically relevant, and Ashley is a social and political activist and a great writer. But she wrote it because she is a writer and needs to write about these things. This was not easy for her … not easy to make the decision to write about this experience. I would appreciate it if you would go and give her some kind words.

This is the essay: Racism, homophobia, and how I lost my dad last week.

NASA Mars Rover Press Results Leaked!

As you know, NASA is planning a press conference later today, but you don’t have to wait for the big news. It was leaked, and I’ve got it.

The NASA Curiosity Mars Rover has discovered something interesting and rather enigmatic. I understand NASA will be asking your help in trying to identify what it is.

At first, the object appeared as three enigmatic shapes, kind of gray in color, very near each other, spotted in a ground-oriented medium resolution image. This is what the Rover image looked like: Continue reading NASA Mars Rover Press Results Leaked!

Regenesis: Taking over biology using readily available materials from your kitchen

I might be exaggerating slightly about the ready availability of the materials…

Regenesis: How Synthetic Biology Will Reinvent Nature and Ourselves by George Church and Ed Regis looks like a futurist tome on what could happen when technology finally catches up with human imagination and everything changes. Except it isn’t. Most futurists are people with some knowledge of technology, a fertile imagination, and a publicist. Regenesis is by a scientist (working with a writer) who is busy making a different future and who has been involved in every stage of development of the technology under discussion, and for this reason is one of the more important new science-related books you can read right now. Regis is a multiply published science author (his most recent book is What Is Life?: Investigating the Nature of Life in the Age of Synthetic Biology) and George Church is Professor of Genetics at Harvard Medical School who is one of the key players in the Personal Genome Project. He directs Personal Genomics.org, which curates the only OpenAccess human “Genomic, Environmental and Trait database. His work led to the first commercial genome sequence (for apathogen) and he has been involved in both genome sequencing (reading the genes) and synthesis (making new ones) in both the academic and private milieu. He is also director of the NIH “Center for Excellence in Genomic Science” which places him at the center of biosafety, gene privacy, and security policy development.

Church was finishing is PhD work at Harvard the same year that I started mine. We never met to my knowledge, but I remember the construction in those days of the new genetic research facility there. Cambridge, Massachusetts was the first and only city (and still maybe the only one) to write zoning and building regulations for genetic research facilities, and the building was right across from the museum I worked in. People were afraid of what might happen if some of the genes, or genetically modified organisms, they were working on in that building got out. That was a valid concern given the unknowns, but it would eventually happen that the details of what people needed to worry about shifted considerably over time. Had George Church been sent back in a time capsule and put in charge of that project, his understanding of and commitment to safety in genetic research would have been more than a little reassuring. Of course, this would have then affected his own future and thus … oh never mind, that damn Time Paradox is too confusing…

Regenesis covers the history and current status of some of the most innovative and interesting research in genetic engineering, and it is organized in a way that I really liked. The book is written as a time line. The chapters run as follows:

  • -3,800 Myr, Late Hadan
  • -3,500 Myr, Archean
  • -500 Myr, Cambrian
  • -360 Myr, Carboniferous
  • -60 Myr, Paleocene
  • -30,000 YR, Pleistocene Park
  • -10,000 YR, Neolithic
  • -100 Yr, Anthropocene
  • -1 Yr, Holocene
  • +1 Yr, The End of the Beginning, Transhumanis, and the Panspermia Era

See what they did there?

Each of these past eras represents a change in the genetics, cellular biology, evolutionary stage, or environmental context in which live existed, with the human role coming along in a big way near the end. This allows the authors to discuss the nature of life at each stage, and related the last 20 or so years of genomic and genetic research to different levels of organization of life. This causes this book to be different from the average run of the mill futurist book in two ways: 1) You learn stuff about how things are and have been, detailed stuff, interesting stuff; and 2) There is a solid road map imposed on the discussion of what is being done now and what could be done in the future, which allows the authors to avoid the messing around we see in a lot of futurist books. In other words, this is not futurist manifest; It is a history of life and a detailed discussion of what humans are actually doing with life these days and what we seem poised to be able to do based on a solid grounding in actual ongoing research.

One of the most interesting themes that helps underscore the nature of this discussion is left- vs right-handedness in biology. Most complex biological molecules could be built with the structure and symmetry organized in a left handed vs right handed way. It is quite possible that we could encounter a planet (if we could get there) rich in life that is all built on molecules that are the opposite in orientation from what we have here on Earth. Not only that, but it is possible to build such a life form now. We could construct a human that is left-handed, and thus, fundamentally different from all other humans. Such a human could not be infected by many, perhaps most, cell-level pathogens because those pathogens would not be able to interact with the left-handed body. Obviously, this is a complex issue and there is a lot too it…you’ll have to read the book to find out what the implications and complications of such a thing might be.

The most important theme in the book, and also very interesting, is the concept of synthetic biology. The goal of synthetic biology is to create an organism or set of organisms that use the standard biological machinery (proteins and enzymes and stuff building other molecules in a certain way) that will be instructed with their DNA to produce a certain product, such as oil, a house, a cute little furry organism that will replace your Roomba. Well, maybe not that last one. We use lots of synthetic biology now but we are at the chipped-stone tool phase. The basics are in place, the research is progressing, the market for the products is there. Synthetic biology is one of those “technologies” that many hope will come along and solve many of our problems. It should be relatively straight forward to create a thing that will make hydrocarbon based fuels, which one must admit are a very handy way of storing energy, from raw materials that do not include fossil carbon. My personal fantasy is to build large flat factories on the sea surface or in open arid regions that will produce a solid that we just pile up somewhere to contain carbon taken from the atmosphere, and a steady stream of a clean burning liquid. Down the street, I want to see a factory that consist of a giant, 30 acre leaf surface under which is constantly being built a layer of genetically engineered wood, with whatever properties are needed. Imagine 2X4s of just the right strength and flexibility, but indurated with anti-fungicidal and other preservative chemicals. A combination of balsa, ebony, maple, cedar and hickory. Left-handed, of course. Who needs plastic and concrete when we have Frankewood! Bwahahaha!

I interviewed George Church a couple of weeks ago on the radio. The podcast of that interview is located hare on iTunes
icon, or you can find out other ways to get it or listen to it directly here.

From the official description of the book:

Imagine a future in which human beings have become immune to all viruses, in which bacteria can custom-produce everyday items, like a drinking cup, or generate enough electricity to end oil dependency. Building a house would entail no more work than planting a seed in the ground. These scenarios may seem far-fetched, but pioneering geneticist George Church and science writer Ed Regis show that synthetic biology is bringing us ever closer to making such visions a reality.

In Regenesis, Church and Regis explorethe possibilities—and perils—of the emerging field of synthetic biology. Synthetic biology, in which living organisms are selectively altered by modifying substantial portions of their genomes, allows for the creation of entirely new species of organisms. Until now, nature has been the exclusive arbiter of life, death, and evolution; with synthetic biology, we now have the potential to write our own biological future. Indeed, as Church and Regis show, it even enables us to revisit crucial points in the evolution of life and, through synthetic biological techniques, choose different paths from those nature originally took.

Michele Bachmann: Waiting for the other shoe to drop?

Michele Bachmann. Photo by Flickr User Gage Skidmore.
Or, maybe just waiting for a pin to drop, to break the silence? Bill Prendergast at Minnesota Progressive Project has floated an interesting, if somewhat complicated, hypothesis. He notes that Michel Bachmann has been very silent, out of the news, since the election which is now (though it seems like yesterday) nearly a month in the past. He suggests that the GOP establishment has shut her down, something they may have wanted to do for some time but would have been able to do because of her independent support from the coalition of players in the Christian Religious Right and the Batshit Crazy People who seem to be sprinkled around everywhere. He also suggests that Bachmann’s uncanny quietitude may be a test, that she is passing. Bachmann has been notably ignored by the GOP leadership in the House, which they still control, in the current round of doling out responsibilities. Bill Pendergrast’s idea is that Bachmann is attempting to demonstrate that she can do something no one really has ever thought that she could do: STFU for several weeks at a time, avoid making over the top outrageous statements that cause all sorts of trouble.

All interesting ideas. I’d like to add to this one small twist: Bachmann could have been overlooked for positions of responsibility by the GOP establishment because she is a woman. The GOP engaged in a Gettysburg Level attack on women (and others) over the last year, and were summarily defeated. This led me to recently suggest that the war on Gay Marriage, at least, had reached it’s “High Water Mark.” In the case of the War on Women, having lost that, the GOP establishment may be taking out their frustration on their own women, the members of their own party who happen to have two X Chromosomes.

Anyway, back to Pendergast’s point. When I read his post, I had to ask myself, being a scientist and all, if Bill was using the correct null model, or at least, the correct assumption. Might it be the case, I wondered, if CongressCritters are generally quiet this time of year, after the election? Is it possible that Michele Bachmann is not being unusually silent, just normal? As shocking as that prospect may sound, it is something that needs to be considered, to be fair, honest, and scientific. So, pursuant to that, I went back in time to the period in 2008 that corresponds to the last few post-election weeks, running a bit into December for good measure. It turns out, Bachmann was not being quiet.

And so, I give you here a sampling of post-election Michele Bachmann:

November 19th 2008
Bachmann says Franken stuffing ballot box, anti-American comments urban legend

Republican Rep. Michele Bachmann appeared on FOX’s Hannity & Colmes last night to spew some more great quotes to get everyone riled up. She knows what people hate to hear.

In her interview, she accused Al Franken of stuffing the ballot box. She then continued pushing the “ballots in the car” rumor despite it being proved false and clarified by Gov. Tim Pawlenty. Then she said her statements on MSNBC’s Hardball were “urban legend” even as the host reads the transcript aloud to her. What is going on here?

November 19th, 2008
Bachmann rips Obama, Franken denies anti-American remark

Michele Bachmann, appearing Tuesday night on Fox News show with Sean Hannity and Alan Colmes, derided President-Elect Barack Obama as “more of the same” over reports that many of his new appointments are recycled Clintonistas.

The Minnesota Republican also accused DFL Senate candidate Al Franken of trying to “stuff the ballot box” in his recount struggle with GOP incumbent Norm Coleman.

All the while, Bachmann managed to reserve enough ammo to dismiss as an “urban legend” reports that she had suggested on a pre-election episode of the “Hardball” show with MSNBC host Chris Matthews that Obama and other members of Congress were “anti-American,” and that the media should investigate them as such.

Resident Fox liberal Alan Colmes, who read a transcript of Bachmann’s “anti-American” quote from her appearance on MSNBC, offered to have her watch the video clip of her remarks on his own web site. But the segment ended before Bachmann could fully respond.

Not, however, before Bachmann pummeled Obama over some of his recent presidential appointments, including the pick of former President Clinton official Eric Holder as Obama’s new attorney general.

Novemer 20th, 2008
Bachmann can’t stop talking about socialism

Rep. Michele Bachmann loves coming up with the zingers. Apparently she still loves talking about how the United States is slowly becoming a socialist nation. Run for your lives!

In her latest Fox News interview (which she won’t let us embed on our site) she continues to scare Americans that the Democratic House and Senate will slowly suck our country into socialism and ruin our lives.

There’s more, but that’s probably enough.

Yeah, it seems that Michele Bachmann is being, relative to herself, quiet.

Spam

… And I don’t mean the good kind.

A feature of WordPress blogging software is that you can turn off commenting on old posts, older than a specified number of days. I don’t like doing that because some of the most interesting comments trickle in on some of those old posts. Like this one.

But, for some reason, old posts are spam magnets, and I’m not talking about the canned meat. I opened up commenting on old posts a while back, and suddenly the spam is rushing like Atlantic Seawater in a New York Subway. So, I’ve re-closed comments on those old posts.

In the mean time, I deleted a LOT of spam. The spam filter was not catching it. If you are a real person and you think a comment of yours got deleted by accident, let me know.

Thank you very much, that is all.

Rabies (and Autism)

I have discussed rabies before. In Attack of the Hound of Malembi. Or, “Whose are these people, anyway?” I discussed a personal encounter with a rabid dog, which killed my cat and bit six friend. In Ode to Rocky I discuss an encounter with a cute little raccoon which probably did not have rabies, but since this was during the Great Rabid Raccoon Scare a few years back he got busted anyway.

And now, we have Skeptically Speaking #190 RABID … last Sunday’s show which is now a podcast available for you to download.

This week, we’re talking about a viral menace that’s one of the scariest – and deadliest – known to science. We’ll talk to WIRED editor Bill Wasik and veterinarian Monica Murphy about their book Rabid: A Cultural History of the World’s Most Diabolical Virus. And on the podcast, we’ll speak to post-doctoral researcher Elisabeth Whyte, about a crowd-funded project to use computer games to help adolescents with autism improve social skills and face processing abilities.

Get your rabies shot first, then CLICK HERE.

Dark Matter, Energy Drinks, and Gender

These three things are intimately connected.

Well, OK, they’re not really connected at all, but all will be the subject of discussion on the next Skeptically Speaking. I believe Desiree will be speaking on Sunday, December 2nd with James Pinfold about Dark Matter … apparently there is new information bringing an explanation for it into question … and the other items will be added into the podcast to be released on Friday, December 7th. Details here.

Nature's Compass: The Mystery of Animal Navigation

I’ve been interested in Animal Navigation for years. I’ve always been interested in things like orientation and maps and so on, but it was when I started working with the Efe Pygmies in the mid 1980s, and noticed that there were some interesting things about how they found their way around in the rainforest, that I started to track and absorb the literature on the issue. Back then, there were a few researchers who felt that some animals, possibly including humans, had built in navigation equipment, possibly using magnetics. Some of those researchers oversimplified their models and took the position that if pigeons could home with a built in compass, than so could humans, for instance. Some of the research was a bit zany and I think the world of zoology was not quite ready for the idea that organisms had built in electronic (magnetic, actually) parts. The physiology of navigation remained controversial for some time, and many of the researchers who had valid findings, it seems needed to be careful how much they pused their ideas.

We’ve come a long way since then, and a recently published book, Nature’s Compass: The Mystery of Animal Navigation by James Gould and Carol Grant Gould is an excellent entree into the science of animal navigation.

This book covers navigation in a wide range of animals living in a diversity of habitats around the world. Navigation by animals is not simple. Most animals use multiple systems, though one system or another may be primary. Some of the things animals do to navigate can only be thought of as the use of senses other than the ones we usually assume exist. It turns out that humans are nothing special in the area of navigation. Many other creatures have us beat in keeping track of time and space relationships. This is as expected, since primates are rarely migratory and rarely cover large distances. (Humans are unique in this regard, I’m pretty sure.)

The book covers basic problems in navigation, keeping track of time, internal compasses, internal maps, and important issues related to conservation and extinction. Enough of this book addresses birds that I’m listing this review under “bird books” but it is by no means limited to Aves.

Related reviews:

The Science of Good Cooking

Does grinding your own meat make a better burger? How does adding fat to your eggs create the perfect tender omelet? Why should you have patience before carving your roast?

Discover the science behind everyday cooking with Christopher Kimball from America’s Test Kitchen and Cook’s Illustrated. Join us as we explore the fundamental science explaining how — and why — your recipes work.

Here is something you can do to help…

(This is for US citizens)

President Obama speaks to the American people from a busy factory floor in Pennsylvania about the urgent need to pass the middle class tax cuts, which will give families and businesses preparing for the holidays the certainty they need going into the New Year. Democrats and Republicans must come together to pass one thing that everyone agrees on—extending income tax cuts for 98 percent of American families and 97 percent of small businesses, and there is no reason to wait. The President urges Congress to take action to help grow our economy and strengthen the middle class.

Click here and fill it out.

Then… call or write BOTH of your members of Congress.