Science

We no longer have to wonder what self-awareness looks like, says neuroscientist Daniel Bor – now we can see for ourselves

(Phys.org) —UCLA life scientists provide important new details on how climate change will affect interactions between species in research published online May 21 in the Journal of Animal Ecology. This knowledge, they say, is critical to making accurate predictions and informing policymakers of how species are likely to be impacted by rising temperatures.

Having the biggest playlist doesn't make a male songbird the brainiest of the bunch, a new study shows.

Sarfraz Manzoor in The Telegraph: Mahinder Singh Pujji, a 22-year-old Indian man, was queuing to see a film at his local cinema. The man in front of him saw his turban and uniform – Pujji was a member of the RAF – and said: “Sir, you don’t have to stand in the queue.” He ushered him to the front of the line. No one grumbled and the woman working in the ticket office, again seeing his turban and wings, refused to accept money for the ticket. This incident would be surprising and heart-warming if it occurred today; in fact, the film that Pujji was queuing to see was Gone with the Wind, and the year was 1940. What makes this story so powerful is that it challenges established narratives about south Asian migration to Britain: it shows us that years before Commonwealth immigration there had been migrants from the subcontinent; it questions the assumption that migrants were always treated poorly, and it reminds us of the contribution many made. South Asians and the Shaping of Britain excavates the archives for letters, diaries, books and articles relating to this subject. Taking the year 1870 – the zenith of empire – as the starting point and traversing 80 years to 1950 – a period that witnessed two world wars, the decline of empire, the fight for Indian independence and Partition – the book demonstrates that Britain has a more complex multicultural heritage than is usually acknowledged. I knew about the role Indians played during the two world wars, for example, but I had no idea that in the period covered here, 80 different south Asian authors published 180-plus books in Britain. This one builds on Rozina Visram’s landmark histories Ayahs, Lascars and Princes and Asians in Britain. But what makes reading it a more visceral experience is the first-hand accounts and documents: a book review by Oscar Wilde from 1890 of the Indian poet Manmohan Ghose, an extraordinary photograph of Sophia Duleep Singh – the mixed-race daughter of the deposed Maharajah of the Punjab – standing outside Hampton Court Palace in 1913 in a long dark coat and hat selling a copy of The Suffragette. Two years later Ludder Singh, an Indian soldier fighting in the trenches during the First World War, writes to his brother back home: “Bodies were lying on bodies like stones in heaps”; “When a man dies in the world I and you think it is a great event, but here in this war corpses are piled one upon another so that they cannot be counted.” More here.

From Scientific American: There is no Nobel Prize in mathematics, but in 2001 the Norwegian government established a million-dollar Abel Prize, which is widely considered as an equivalent of the Nobel for mathematicians. This year’s prize was awarded to Pierre Deligne, professor emeritus at the Institute for Advanced Study in Princeton, N.J. Today, he is honored at a ceremony held in Oslo. Deligne’s most spectacular results are on the interface of two areas of mathematics: number theory and geometry. At first glance, the two subjects appear to be light-years apart. As the name suggests, number theory is the study of numbers, such as the familiar natural numbers (1, 2, 3, and so on) and fractions, or more exotic ones, such as the square root of two. Geometry, on the other hand, studies shapes, such as the sphere or the surface of a donut. But French mathematician André Weil had a penetrating insight that the two subjects are in fact closely related. In 1940, while Weil was imprisoned for refusing to serve in the army during World War II, he sent a letter to his sister Simone Weil, a noted philosopher, in which he articulated his vision of a mathematical Rosetta stone. Weil suggested that sentences written in the language of number theory could be translated into the language of geometry, and vice versa. “Nothing is more fertile than these illicit liaisons,” he wrote to his sister about the unexpected links he uncovered between the two subjects; “nothing gives more pleasure to the connoisseur.” And the key to his groundbreaking idea was something we encounter everyday when we look at the clock. If we start working at 10:00 in the morning and work for eight hours, when do we finish? Well, 10 + 8 = 18, so a natural thing to say would be: “We finish at 18 o’clock.” This would be perfectly fine to say in France, where hours are recorded as numbers from zero to 24 (actually, not so fine, because a workday in France is usually limited to seven hours). But in the U.S. we say: “We finish at 6:00 pm.” How do we get six out of 18? We subtract 12: 18 – 12 = 6. Mathematicians call this “addition modulo 12.” Likewise, we can do addition modulo any whole number N. Just imagine a clock in which there are N hours instead of 12. For each N, we then obtain an esoteric-looking numerical system, in which we can do addition and multiplication, just like with ordinary numbers. For many years these systems looked, even to math practitioners, like something that would never have any real-world applications. In fact, English mathematician G.H. Hardy wrote, with defiance and pride, of the “uselessness” of number theory. But the joke was on him: these numerical systems are now ubiquitous in the encryption algorithms used in online banking. Every time we make a purchase online, arithmetic modulo N springs into action! More here.

UK fruit growers could enjoy a much better harvest of apples and pears this year, following the dismal crop in 2012, experts believe.

Researchers sequence genome of organism that ravaged the Irish potatoes in 19th century

(Phys.org) —In Antarctica in January, 2013 – the summer at the South Pole – scientists released 20 balloons, each eight stories tall, into the air to help answer an enduring space weather question: when the giant radiation belts surrounding Earth lose material, where do the extra particles actually go?

US online giant Amazon has unveiled plans for a futuristic greenhouse style headquarters "where employees can work and socialize in a more natural, park-like setting."

American teenagers are sharing more information about themselves on social media sites, but taking steps to protect their privacy online, a study showed Tuesday.