5 November 2018

The Economist: A potential cure for HIV (May 18, 2017)

Scientists have developed a therapeutic vaccine for HIV which has the potential to create a functional cure for the disease. Here's how it works.

Have doctors found a cure for HIV? Since 1981 the AIDS epidemic has killed around 35 million people. Up until now HIV antiretroviral drugs have been the only way to control the disease. But they create their own problems as antiretrovirals can cost around $10,000 a year.


Quartz: Why Dutch and Danish retirees sleep well at night

No country has figured out how to finance a third of your life out of the labor force. But some countries have better systems than others. The latest annual, Melbourne Mercer Global Pension Index , now in its tenth year, ranks the health and viability of national retirement systems around the world. It has once again awarded the Netherlands a top slot, and Denmark, last year’s winner, is right behind. They rank highly in terms of the level of benefits they supply, their sustainability (the Dutch and Danish don’t worry about their system going bust), and transparency. There are many things we can learn from their success, they show how most countries are on the wrong track. [...]

About 90% of Danes also have access to a retirement account through work. It is similar to the US’s 401(k), where employers and employees contribute to an account and employees bear the investment risk. The wide coverage is what makes Danish pensions so special: In the 1980s only 35% had access to a pension account through work. The increase comes from the roll out of new pension accounts that targeted blue-collar workers. Danes contribute between 12 to 18% to their employee pension accounts. Benefits are paid as an annuity after retirement, though sometimes Danes can take it as a lump sum.[...]

Argentina is at the bottom of the rankings, and offers lessons about what makes a retirement system work. It primarily relies on state pension funded mostly by current tax dollars like the other countries, but with erratic tax revenue the funding is not secure. Argentine pensions used to feature individual saving accounts until the state appropriated them in 2008. The Mercer report has concerns about the pension’s sustainability and if it offers enough to the poorest Argentines. It shows how a lack of transparency, unstable institutions, and fiscal pressure can undermine any pension system.

Scientific American: Abortion Is a Problem to Be Solved, Not a Moral Issue (September 1, 2018)

Abstinence would obviate abortions just as starvation would forestall obesity. There is a reason no one has proposed chastity as a solution to overpopulation. Sexual asceticism doesn't work, because physical desire is nearly as fundamental as food to our survival and flourishing. A 2008 study published in the Journal of Adolescent Health entitled “Abstinence-Only and Comprehensive Sex Education and the Initiation of Sexual Activity and Teen Pregnancy” found that among American adolescents ages 15 to 19, “abstinence-only education did not reduce the likelihood of engaging in vaginal intercourse” and that “adolescents who received comprehensive sex education had a lower risk of pregnancy than adolescents who received abstinence-only or no sex education.” A 2011 PLOS ONE paper analyzing “Abstinence-Only Education and Teen Pregnancy Rates” in 48 U.S. states concluded that “increasing emphasis on abstinence education is positively correlated with teenage pregnancy and birth rates,” controlling for socioeconomic status, educational attainment and ethnicity.

Most telling, a 2013 paper entitled “Like a Virgin (Mother): Analysis of Data from a Longitudinal, US Population Representative Sample Survey,” published in BMJ reported that 45 of the 7,870 American women studied between 1995 and 2009 said they become pregnant without sex. Who were these immaculately conceiving parthenogenetic Marys? They were twice as likely as other pregnant women to have signed a chastity pledge, and they were significantly more likely to report that their parents had difficulties discussing sex or birth control with them.

When women are educated and have access to birth-control technologies, pregnancies and, eventually, abortions decrease. A 2003 study on the “Relationships between Contraception and Abortion,” published in International Family Planning Perspectives, concluded that abortion rates declined as contraceptive use increased in seven countries (Kazakhstan, Kyrgyzstan, Uzbekistan, Bulgaria, Turkey, Tunisia and Switzerland). In six other nations (Cuba, Denmark, the Netherlands, Singapore, South Korea and the U.S.), contraceptive use and abortion rates rose simultaneously, but overall levels of fertility were falling during the period studied. After fertility levels stabilized, contraceptive use continued to increase, and abortion rates fell.

Scientific American: How Identity, Not Issues, Explains the Partisan Divide (June 19, 2018)

U.S. liberals and conservatives not only disagree on policy issues: they are also increasingly unwilling to live near each other, be friends, or get married to members of the other group. This rejection based on group membership is called affective polarization, meaning that our feelings (affect) are different towards members of our own group compared to outsiders. Growing intolerance in the U.S. is a puzzle because disagreeing about policies need not cause rampant mistrust and legislative gridlock. For example, countries with proportional electoral representation like Germany create functional coalitions across different ideologies.

Now, surprising new research suggests that what divides us may not just be the issues. In two national surveys, political psychologist Lilliana Mason of the University of Maryland measured American’s preferences on six issues such as abortion and gun control, how strongly they identified as liberals and conservatives, and how much they preferred social contact with members of their own ideological groups. Identifying as liberal or conservative only explained a small part of their issue positions. (This is consistent with findings that Americans overestimate the differences in policy preferences between Republicans and Democrats.) Next, Mason analyzed whether the substantial intolerance between liberals and conservatives was due to their political identities (how much they labelled themselves as “liberal” or “conservative”) or to their policy opinions. For example, who would be more opposed to marrying a conservative: a moderate liberal who is pro-choice, or a strong liberal who is pro-life? Across all six issues, identifying as liberal or conservative was a stronger predictor of affective polarization than issue positions. Conservatives appear particularly likely to feel cold towards liberals, even conservatives who hold very liberal issue positions.

At the same time, the research has several important limitations. First, the study did not use an experimental design—it’s based on surveys—so the results cannot speak to whether affective polarization causes partisan conflict. Moreover, the set of included policy issues was not comprehensive and may therefore underestimate the links between issue positions and identity or with outgroup dislike. Furthermore, expecting a strong link between ideology and issue positions ignores the fact that many individuals respond to political surveys by repeating what they’ve recently heard from media and political elites rather than reflecting on personal values. These observations can explain why American’s issue positions often appear contradictory and unstable over time.

Al Jazeera: Saving MBS from himself is the key to Saudi Arabia's stability

The return to Saudi Arabia this week of Prince Ahmad bin Abdelaziz, the last surviving full brother of King Salman, following six year of self-imposed exile, confirms the seriousness of the situation in the kingdom.[...]

As Prince Ahmed never publicly accepted MBS's appointment as crown prince, speculation is rife that he has come to replace or challenge him. However, it is much more likely that his return is part of the House of Saud trying to demonstrate unity in the face of the increasingly difficult predicament it faces.[...]

The combination of overconfidence, overambition and lack of diplomatic experience, which came to characterise MBS and his circle of advisers, is what led to the murder of Khashoggi - whether he was involved in it directly or not.[...]

Any of these moves could prove incredibly difficult, if MBS decides to resist - and he has the tools to do so. He is popular with a sizeable part of the Saudi population and has managed to build over the past three years his own deep state, which could sabotage efforts for a transfer of power.

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