19 December 2016

The Guardian: Happy birthday, Pope Francis – for God’s sake don’t retire

Francis is not the liberal the secular media sometimes paint him. He takes the traditional Catholic line on abortion, contraception, gay marriage and women priests. And yet his positions can be more nuanced than the right can tolerate. Gay people have felt welcomed by his famous “who am I to judge?” remark. He has invited transgender people into the Vatican and physically embraced them. He has opened the path to fuller inclusion of divorced and remarried Catholics with the church. He has set up a commission to investigate the possibility of women deacons, which many see as the first step to female priests. And, at the recent 500th anniversary of the Reformation, he acknowledged that Martin Luther had a point about spiritual corruption within the Catholic church.

All this – together with his sweeping reforms of Vatican finances, his work to remodel the bureaucracy known as the Curia, and his moves to empower the wider church and rid the papacy of its monarchical status – have gone down badly with traditionalists.

Some of the men who became bishops during the previous 35-year conservative ascendancy have reacted with sullen silence, in what one Vatican veteran described as “passive-aggressive non-compliance”. But others have been publicly hostile or disdainful – and some are now openly resisting him. Just a month ago, four ultra-traditionalist cardinals issued a public challenge to the pope. They said that his ruling that, in certain circumstances, remarried Catholics might take communion could require a “formal act of correction” from the College of Cardinals. They published five dubia – doubts – virtually accusing the sitting pope of heresy: something without precedent in recent Catholic history. Those who rely on the internet for their information might be forgiven for supposing a civil war is raging inside the Catholic church. That is certainly what the “culture warriors” in the US – which is where many of the most ideological hardliners are to be found – want the world to believe.

Deutsche Welle: Protesters stop lawmakers leaving Poland's parliament

The government's new media restrictions will ban journalists from shooting still pictures or video in parliament, in particular when MPs break the rules, for example by voting for an absent colleague.

Reporters will also be moved to a media centre located in another building, limiting their access to politicians.

Although banned from the main assembly room, at present journalists can mingle freely in the parliament building and grab politicians for interviews in the halls.

Several Warsaw-based journalists tweeted as more than 20 Polish media outlets refused to cover parliament on Friday, under the hashtag #DzieńBezPolitykow (Day without politicians). They included newspapers "Gazeta Wyborcza" and "Rzeczpospolita." [...]

Analysts described Friday's events as the most serious crisis in Poland's parliament in many years.

The Guardian: Killings by US police logged at twice the previous rate under new federal program

Controversy over the government’s lack of official data on killings by police was set off by the fatal shooting of Michael Brown in Ferguson, Missouri, in August 2014. The death of Brown, an unarmed black 18-year-old, led to protests and riots in the town and across the US.

The FBI’s annual count of homicides by police, which depends on chiefs voluntarily submitting their numbers, was discredited after it became clear that the method was recording less than half of all killings nationwide. [...]

The Death in Custody Reporting Act, which was reauthorized by Congress in 2014, requires states receiving federal funding for law enforcement to report all killings by police officers on a quarterly basis. Many states have, however, continued to ignore the law without being penalized. [...]

If the rate of homicides recorded by the justice department was consistent, a total of 1,080 would have been logged for all of 2015. The Guardian’s count, which uses slightly different criteria, ended at 1,146 last year. So far in 2016, it has recorded 1,025 deaths.

18 December 2016

Nautilus Magazine: Listening for Extraterrestrial Blah Blah

If one is looking for signals from an extraterrestrial civilization, why not practice on some of the non-human communication systems already known on our own planet? Whales have had a global communication system for millions of years—longer than Homo sapiens has even existed. Bees, which communicate in part by dancing, had democratic debates about the best places to swarm millions of years before humans came up with democracy as a political system. And other examples abound. No person I know of who has studied another animal’s communication system has ever concluded that the species was dumber than they’d previously thought. [...]

Put simply, we may well have received a message from intelligent beings and neglected it because it didn’t conform to our expectations for what a signal should look like. And this might be why we have yet to detect any interstellar communications in 50 years of searching. [...]

Most linguists used to suppose that Zipf’s Law was a characteristic of human languages only. So we were quite excited to find that, upon plotting the frequency of occurrence of adult bottlenose-dolphin whistles, that they, too, obeyed Zipf’s Law! Later, when two baby bottlenose dolphins were born at Marine World in California, we recorded their infant whistles and discovered that they had the same Zipf’s Law slope as baby human babbling. Thus baby dolphins babble their whistles and have to learn their communication system in a way not dissimilar from the way baby humans learn their languages. By the time the dolphins reached the age of 12 months, the frequency of occurrence distribution of their whistles had reached a –1 slope, as well. [...]

To transmit knowledge, even a very advanced extraterrestrial civilization would still have to obey the rules of information theory. While perhaps not being able to decipher such a message because of lack of common symbols (the same problem we have with, for example, humpback whales), we would get an indication of how complex their communication system—and thereby their thought processes—may be. If the conditional probabilities of a SETI signal are, for example, 20th-order, then not only is the signal artificial in origin, but it would reflect a language far more complex than any on Earth. We would have a quantitative measure of the complexity of the thought processes of a transmitting ETI species.

Quartz: Rooftop hydroponic systems in cities produce vegetables that are cheaper and healthier than rural farms

A paper published this past July the journal Agronomy for Sustainable Development reports that growing leafy greens in rooftop hydroponic systems can not only produce a steady supply of vegetables—it can also be cheaper than buying store-bought alternatives. [...]

Rooftop farming could also create jobs and reduce the carbon footprint of transporting foods into cities, says Wanquing Zhou, a research associate at the Worldwatch Institute. Those are essential side effects, considering the rapid urbanization currently underway in China: By 2020, Guangzhou’s population is expected to nearly double from 9.62 million in 2010 to 15.17 million—almost equivalent to adding the entire population of New York City. [...]

For the two-year study, researchers constructed a “screenhouse”—a semi-enclosed structure with a roof—on top of a two-story building inside the South China Botanical Garden. Surrounded by screens to ward off armies of insects that thrive in Guangzhou’s summer subtropical climate, 14 hydroponic tanks inside the screen house nursed and fed a forest of seven different greens, including caraway, potherb mustard, and Italian lettuce. The crops were then rotated based on their natural growing seasons—from November through March, bouquets of crown daisy and Italian lettuce populated the screenhouse, while summer and fall months brought waves of leaf mustard. [...]

The team also tested two greens and found that they contained fewer contaminants than their market counterparts—including pesticides, nitrate, lead and arsenic. If the finding holds up for the other five vegetables, the hydroponic screenhouse model could be particularly relevant for urban farming. New York, Philadelphia, Detroit and Shanghai have all had traces of lead contamination pop up in their urban soils.