Roundup of missed stories – February 14, 2016

Previous editions here.

1. Zika virus and the 2016 Olympics, Umrah and Hajj – “These mass gatherings provide an additional opportunity to undertake research on the transmission and prevention of Zika virus. Preparedness has been the key to success of recent Hajj mass gatherings held amid known risks, such as pandemic influenza A H1N1, MERS, and Ebola outbreaks. Lessons from Saudi Arabia’s success with hosting Hajj during declared pandemics can be helpful to Brazil and the Olympics organisers. The next 4 months will be a crucial period for both Brazilian and Saudi authorities to review emerging research findings on the natural history of Zika virus through expert consultations. International stakeholders can facilitate the needed advocacy and support.”

2. The incredible story of LIGO – “Dicke, a master at cutting through thorny mechanical dilemmas, also instilled in Weiss the value of solid experimental design. Returning to MIT as a professor, Weiss embraced the teachings of his mentors and became one of the world’s leading experts in high-precision measurements of gravity. The capstone of Weiss’s career is LIGO. Weiss developed the notion of using a special technique called laser interferometry to track minute movements of matter due to gravitational waves. Interferometry involves focused beams of light with well-defined frequencies (i.e., laser beams), traveling along separate paths, then coming together again. The pattern created when the beams reunite provides precise information about the difference in path length.”

3. LIGO’s detection of gravitational waves was predicated on already knowing what to look for – even though we’re finding it for the first time

3a. Cornell theorists affirm gravitational wave detection – ““You need big computers because the equations are so complicated,” explained Larry Kidder, senior research associate and a co-leader of the SXS collaboration. One calculation – with varying masses and spin rates – takes a supercomputer a full week to solve, running 24 hours a day. With different parameters, some calculations take months. SXS created a theoretical catalog of what the different possible gravitational waves would look like. Teukolsky said that the new LIGO paper shows the measured waves with an SXS wave superposed on top and in excellent agreement with the measurements. “That’s a very strong confirmation that these are gravitational waves that come from black holes – and that Einstein’s general theory of relativity is correct,” he said.”

3b. Gravitational waves found, black-hole models led the way – “”Even though the modeling and observations of these gravitational wave sources is difficult, requiring detailed, multi-physics models, the potential to study new realms of physics and understand new astrophysical transients is tremendous. Los Alamos is well-poised to solve these problems,” Fryer said. “Our program studying merger progenitors argued that the most-likely system would be a binary black hole system,” stated Fryer, “and it is gratifying to see that this first detection is exactly such a system. As aLIGO detects more of these mergers we will be able to probe aspects of stellar evolution.””

3c. The scale of the universe is amazing – but more astonishing still is the science that lets us understand it – “That men and women can, in a few short years, take tiny smidges of data from often ill-behaved instruments around the world and judiciously combine them with a wide range of physical theory – including the demanding mathematical subtleties of general relativity – to form an account of something not only unimagined but unimaginable to anyone without the new mental equipment this joint endeavour provided: that seems to me a source of wonder greater than the vastest of astronomical numbers.”

4. ICCR conference to explore ‘Indian origins’ of Romany people such as Elvis Presley, Pablo Picasso – “”These names such as Charlie Chaplin or Elvis Presley are not being arbitrarily thrown up but have come to be associated here with a lot of research. Prima facie, these artists are from the Roma community which have traces in India,” he said. “They migrated from here to Europe 2,500 years ago but till today they have preserved many of social and cultural traditions. We are attempting to bring out that commonality, and express our affinity towards the community.”

5. The case of the sinister buttocks – “One more observation, about definition: This case teaches us that defining plagiarism in terms of lifting someone else’s sequence of words is far too restrictive. If you will forgive me some technical notation, a sentence with words w1 … wk may also be reasonably suspected of being plagiarized if there is an unacknowledged source sentence x1 … xk such that, for most i between 1 and k, either (a) wi = xi or (b) wi is in the set of words presented in some thesaurus or synonym-dictionary as alternatives for xi or (c) wi and xi are both in the set of words presented in the entry for some third word (recall service and liturgy).”

6. High stakes as Japanese space observatory launches – “The major existing X-ray satellites are NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton, which both launched in 1999. These can analyse the constituent wavelengths of X-rays — the spectra — emitted by point-like objects such as stars. But ASTRO-H will be the first to provide high-resolution spectra for much more spread-out X-ray sources such as galaxy clusters, says Norbert Schartel, project scientist for XMM-Newton at ESA’s European Space Astronomy Centre outside Madrid, who is also a member of ASTRO-H’s ESA team.”

7. Hail, Clooney! – “… everyone was resigned to the fact that this was more or less a Clooney show. The actor was asked if he’d make a sequel to Syriana, the Oscar-winning film on petroleum politics that he produced. He said, “There is a lot wrong with the world, as we all know. But we are in a political period in our country today, and we’re not talking enough about the world. As filmmakers, we react to events. We don’t lead the way. The film happens years after the news story breaks. And you need a good story, good characters.” He spoke of his humanitarian work in Darfur (“it’s very close to me”) and how he’d like to make a film around the conflict. “But we haven’t found the proper script yet.” He said he was meeting Angela Merkel the next day.”

8. Measurements of the gravitational constant continue to fail to converge – “Who needs a more accurate numerical value of G (the current recommended value6 is 6.67408 ± 0.00031 × 10−11 kg−1 m3 s−2)? The short answer is, nobody, for the moment, but being apparently unable to converge on a value for G undermines our confidence in the metrology of small forces. Although it is true that the orbits of the planets depend on the product of G and the mass of the Sun — the structures of all astrophysical objects are determined by the balance of gravity and other forces produced by, for example, gas, photon or degeneracy pressure — ab initio models of the Sun are still an order of magnitude away from predicting a value of G at a level comparable with laboratory determinations. We do not need a value of G to test for departures from the inverse square law or the equivalence principle. There is as yet no prospect of a theory of quantum gravity that would predict a value for G that could be tested by experiment. Could these unresolved discrepancies in G hide some new physics?”

9. Retraction Watch interviews Jeffrey Drazen, coauthor of controversial NEJM editorial – “We knew this is a sensitive area, and the editorial brought into the open what had been simmering under the surface. What we now have is an opportunity to have an open and frank discussion about data sharing. This is all about the patients. This is all about disease. We can’t let it be about anything else.”

10. Extending an alternative to Feynman diagrams – “The problem with effective field theories that the authors address is that higher-dimension terms give rise to contributions that cannot be determined by factorization. In some effective field theories, however, these higher-dimension terms are connected to lower-dimension ones by symmetries. This is the case, for example, for nonlinear sigma models, which describe pion interactions at low energies. In this case, and in others, the symmetries are reflected in the behavior of the scattering amplitudes: they approach zero more rapidly as we take some of the external momenta to zero. Cheung et al. take advantage of this behavior to extend the applicability of Cauchy’s theorem to cases where the infinite-momentum condition fails to hold. Their work allows us to extend the idea of defining quantum field theories via physical principles, instead of via a Lagrangian, to an important class of effective field theories.”

11. Cosmologist Janna Levin on the vitalising power of obsessiveness, from Newton to Einstein – “The history of innovation offers plenty of testaments — most of the people we celebrate as geniuses, whose breakthroughs forever changed our understanding of the world and our experience of life, labored under David Foster Wallace’s definition of true heroism — “minutes, hours, weeks, year upon year of the quiet, precise, judicious exercise of probity and care — with no one there to see or cheer.” Marie Curie toiled in her lab until excessive exposure to radiation begot the finitude of her flesh, wholly unprotected by her two Nobel Prizes. Trailblazing astronomer Maria Mitchell made herself “ill with fatigue” as she peered into the cosmos with her two-inch telescope well into the night, night after night. Thomas Edison tried material after material while looking for a stable filament for the first incandescent bulb, proclaiming: “I have not failed. I’ve just found ten thousand ways that won’t work.” And then there was light.”

12. Stephen Hawking v. Paul Rudd for the fate of humanity

13. India needs home-grown GM food to stop starvation – “India should stop trying to build the Taj Mahal with borrowed bricks. We need a concerted effort at home to discover and manipulate relevant genes in indigenous organisms and crops (such as chickpea and rice). Indian microbial institutes should take up projects in this direction, because most of the currently used genes for transgenic generation are of microbial origin. That requires a change in direction from an Indian GM-food strategy that has traditionally aimed at quick product development instead of careful assessment of the underlying science. Such home-grown GM crops would also reduce reliance on transgenic technology produced by multinational companies, which is expensive and rarely optimized for the conditions of specific regions. Some GM crops designed abroad need more water than is usually available in some parts of India, for example, putting great stress on farmers. Indian scientists need better training in IP issues, especially when our researchers join foreign collaborations to examine and exploit the molecular biology of our natural resources. Otherwise, Indian researchers may get the scientific credit for discoveries but fail to claim the right to commercialize the products developed.”

14. Watch the destruction of Pompeii by Mt. Vesuvius, recreated with computer animation – “The ash-preserved ruins of Pompeii, more than any other source, have provided historians with a window into just what life in that time and place was like. A Day in Pompeii, an exhibition held at the Melbourne Museum in 2009, gave its more than 330,000 visitors a chance to experience Pompeii’s life even more vividly. The exhibition included a 3D theater installation that featured the animation above. Watch it, and you can see Pompeii brought back to life with computer-generated imagery — and then, in snapshots over the course of 48 hours, entombed by Vesuvius again.”

15. ‘I’ll take the radiant, radioactive half-life of love over half-love’ – “The span of a woman’s twenties—not just in urban India, but elsewhere too—is a period in which she can go from being an ingénue playing at power with older men to becoming, herself, a station of strength. “It is astonishing how strong you become, when you’ve spent a lot of time being other people’s weaknesses,” I write in one story, ‘Corvus’. A weakness—a flaw, a temptation, a mistake. Strength takes shape, invariably, through failure, including the failures of others. It happens, ultimately, through unrequited love, love at the wrong time, love afraid of the sound of its own name. And so, left to yourself in the absence of other scaffolding, you teach yourself how to build an Ark that you fill one by one by one by one with memory that petrifies into treasure, risk that alchemises into beauty, rupture that raptures into meaning. And then, by yourself, you pull its door closed.”

16. A gradual decline of nuclear power is in the offing – “… energy demand is growing rapidly, leading to construction of just about every form of electricity generation known. The two most populous of these economies — China and India — have great ambitions for nuclear power, and everything else. During 2014, China brought online 5.3 GW of nuclear power, 20.3 GW of wind turbine power, 21.8 GW of hydropower and 53.3 GW of power from thermal plants (mostly coal). Between September 2014 and September 2015, India commissioned a 1 GW nuclear reactor, coal plants generating 16 GW and wind and solar plants generating nearly 5 GW. In recent years, these two, and several other countries, have generated more energy from non-hydro renewables than nuclear energy25. In short, China, India and other developing countries are following an all-of-the-above strategy. As a result, although the overall capacity of nuclear energy might grow, globally the share of nuclear power in electricity generation will continue to drop (Fig. 4). Although costs may currently take a back seat to meeting demand, in the long run the same economic forces shaping the nuclear future in the developed world will limit nuclear growth in the developing world too.”