Monday, May 14, 2012

Making Paleoanthropology A Real Science

There is a strengthening movement towards introducing more transparency in science by making data and papers produced from publicly funded research more readily available to all those interested. Paleoanthropology which includes the study of ancient human fossils has been an especially secretive field with researchers zealously guarding their fossils until they have completed their studies and published their results.

Kate Wong in Scientific American blog writes about recent efforts to end this culture of secrecy:

...Kivell thinks concerns about sharing fossil data are misplaced. “You don’t have to worry about getting scooped,” she says, explaining that a lot of the science of interpreting fossils lies in comparing them with other fossils, which is time-consuming work. “Good science in paleoanthropology is highly comparative, highly descriptive and cannot be done fast,” Hawks agrees. “If it’s not done with extensive comparison and careful description, it’s not going to be good.”

Hawks observes that genetics had the same problem paleoanthropology has with making data accessible. But eventually the geneticists “got over it as a culture.” Indeed, it has become standard practice among geneticists to upload new sequence data to a public database before submitting a paper on the findings to a journal for publication. “I really think most people want to see things more open than they are,” Hawks says. “[Paleoanthropology] should be a real science just like genetics is a real science.”

Saturday, May 12, 2012

Debunking Miracles May Get You Jail Time In India

Another normal day in India:

Early in March, little drops of water began to drip from the feet of the statue of Jesus nailed to the cross on the church of Our Lady of Velankanni, down on to Mumbai's unlovely Irla Road. Hundreds began to flock to the church to collect the holy water in little plastic bottles, hoping the tears of the son of god would sanctify their homes and heal their beloved. 

Sanal Edamaruku, the eminent rationalist thinker, arrived at the church a fortnight after the miracle began drawing crowds. It took him less than half an hour to discover the source of the divine tears: a filthy puddle formed by a blocked drain, from where water was being pushed up through a phenomenon all high-school physics students are familiar with, called capillary action. 

For his discovery, Mr. Edamaruku now faces the prospect of three years in prison — and the absolute certainty that he will spend several more years hopping between lawyers' offices and courtrooms. In the wake of Mr. Edamaruku's miracle-busting Mumbai visit, three police stations in the capital received complaints against him for inciting religious hatred. First information reports were filed, and investigations initiated with exemplary — if unusual — alacrity. 


Friday, May 4, 2012

Violence Part Of The Social Experience In Indus Civilization

Researchers Gwen Robbins Schug and Veena Mushrif Tripathy in an interview with Anthropology news have this to say about Harappan society:

It was argued that Harappa was a rare example of a peaceful, heterarchical state. The human skeletal material was never consulted to address this question. Based on our evidence for both exclusion and social differentiation in the mortuary practices at Harappa, we argue that Harappa was not entirely peaceful and social differentiation was part of life. We hope archaeologists working in this area will plan future excavations to include the peripheral areas outside the cities; excavation outside the city walls will tell us more about Indus society.

We are using the human skeletons as artifacts of the social experience. We used the concept of structural violence in our most recent work because it accounts for the clear distinctions we see in the burial practices, ritual aspects, prevalence of trauma and infection. The mortuary and bioarchaeological evidence at Harappa suggests that the social experience in South Asia was not exceptionally different from other early urban civilizations; the kinds of suffering and the patterns of violence present at Harappa suggests structural violence—unequal power, uneven access to resources, and oppression that leads to denial of basic needs and even violence.

Lest some people get too excited about the use of the words Harappa and violence in the same sentence, let it be made clear that this violence refers to interpersonal violence present in any complex society and not violence inflicted by outsiders during war.
 

Thursday, May 3, 2012

ExxonMobil Were Playing Both Ways On Global Warming All Along

Fresh Air has an absolutely fascinating interview with journalist Steve Coll who has written a new book on ExxonMobil.

For many years ExxonMobil engaged in a campaign to downplay the human role in global warming and tried to discredit the science of recent climate change.

And yet:

GROSS: Just one more thing about climate change. During the period when ExxonMobil was trying to defeat global warming science, at the same time scientists within Exxon were trying to figure out, well, if the planet is warming, how can we profit from that? So they work in both fronts at the same time.

COLL: Well, that's right. They're a science-based organization. They employ a lot of geologists, and the mission of those geologists is to understand the Earth's structure and how changes in temperatures, geology, technology, could intersect to create opportunities to find oil. And as the book reports, geologists in some of their most important kind of discovery departments were looking at how warming might unlock oil reserves and positioning ExxonMobil with advice about how to think about that.

GROSS: So in other words, Exxon wanted to defeat global science because that says that fossil fuels, burning fossil fuels is warming the climate and creating weather changes and climate change, and that would mean problems for Exxon because it's the fossil fuel industry.

But at the same time, its own scientists were saying, well, it looks like the Earth is warming, so let's see what new oil reserves that might open up to us.

Those new reserves that might open up were under the Arctic sea bed, made more accessible as increased summer melting of the Arctic sea ice makes it easier to explore and eventually exploit those resources.

There are a lot more interesting tidbits in this long interview including ExxonMobil's tussle with the U.S. government over human rights issues in oil rich countries like Chad and the company's increasing interest in unconventional oil and gas resources.


Map Of Potential Carbon Dioxide Storage Sites In U.S. Sedimentary Basins

via Nobel Intent:



Potential carbon dioxide sequestration sites are shown in blue.

Carbon capture and sequestration (CCS) is a climate change mitigation measure. Carbon dioxide emitted by power plants is compressed into a supercritical fluid and injected in deep saline aquifers with an impermeable geological capping layer that prevents the liquid CO2 from escaping.

Does U.S. sedimentary basins have enough storage capacity to make a difference in emissions? From the abstract published in PNAS:

We show that in the United States, if CO2 production from power generation continues to rise at recent rates, then CCS can store enough CO2 to stabilize emissions at current levels for at least 100 y.  This result suggests that the large-scale implementation of CCS is a geologically viable climate-change mitigation option in the United States over the next century.

Will it be economically viable though? There seems to be no hurry in the climate change policy environment in making CO2 emissions expensive enough for companies to turn to CCS.