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Communications

Why People Dislike Really Smart Leaders (scientificamerican.com) 677

An anonymous reader quotes a report from Scientific American: Intelligence makes for better leaders -- from undergraduates to executives to presidents -- according to multiple studies. It certainly makes sense that handling a market shift or legislative logjam requires cognitive oomph. But new research on leadership suggests that, at a certain point, having a higher IQ stops helping and starts hurting. The researchers looked at 379 male and female business leaders in 30 countries, across fields that included banking, retail and technology. The managers took IQ tests (an imperfect but robust predictor of performance in many areas), and each was rated on leadership style and effectiveness by an average of eight co-workers. IQ positively correlated with ratings of leader effectiveness, strategy formation, vision and several other characteristics -- up to a point. The ratings peaked at an IQ of around 120, which is higher than roughly 80 percent of office workers. Beyond that, the ratings declined. The researchers suggest the "ideal" IQ could be higher or lower in various fields, depending on whether technical versus social skills are more valued in a given work culture. The study's lead author, John Antonakis, a psychologist at the University of Lausanne in Switzerland, suggests leaders should use their intelligence to generate creative metaphors that will persuade and inspire others -- the way former U.S. President Barack Obama did. "I think the only way a smart person can signal their intelligence appropriately and still connect with the people," Antonakis says, "is to speak in charismatic ways."
Communications

Ask Slashdot: How Would You Explain Einstein's Theories To a Nine-Year-Old? 293

SiggyRadiation writes: A few days ago, my 9-year-old son asked me why Albert Einstein was so famous. I decided not just to start with the famous formula E=mc^2, because that just seemed to be the easy way out. So I tried to explain what mass and energy are. Then I asked him to try to explain gravity to me. The earth pulls at you because it has a lot of mass. But how can the earth influence your body, pull your feet to the ground, without actually touching you? Why is it that one thing (the earth) can influence something else (you) without actually being connected? Isn't that weird? Einstein figured out how energy, mass and gravity work and are related to each other. This is where our conversation ended.

Afterwards I thought: this might be a nice question to ask on Slashdot; how would I continue this discussion to explain it to him further? Of course, with the goal of further feeding his interest in physics.
Science

Global Warming Predictions May Now Be a Lot Less Uncertain (wired.com) 384

An anonymous reader shares a report: Humanity must not pass a rise of 2 degrees Celsius in global temperature from pre-industrial levels, so says the Paris climate agreement. Cross that line and the global effects of climate change start looking less like a grave situation and more like a catastrophe. The frustrating bit about studying climate change is the inherent uncertainty of it all. Predicting where it's going is a matter of mashing up thousands of variables in massive, confounding systems. But today in the journal Nature, researchers claim they've reduced the uncertainty in a key metric of climate change by 60 percent, narrowing a range of potential warming from 3C to 1.2C. And that could have implications for how the international community arrives at climate goals like it did in Paris. The metric is called equilibrium climate sensitivity, but don't let the name scare you.
NASA

2017 Among Warmest Years On Record (npr.org) 187

2017 was among the warmest years on record, according to new data released by NASA and the National Oceanic Atmospheric Administration. From a report: The planet's global surface temperature last year was second warmest since 1880, NASA says. NOAA calls it the third warmest year on record, due to slight variation in the ways that they analyze temperatures. Both put 2017 behind 2016's record temperatures. And "both analyses show that the five warmest years on record have all taken place since 2010," NASA said in a press release. The trend is seen most dramatically in the Arctic, NASA says, as sea ice continues to melt.
Science

No More Pancake Syrup? Climate Change Could Bring an End To Sugar Maples (sciencemag.org) 363

An anonymous reader shares a research report: Savor that sticky, slightly nutty sweetness drenching your Sunday morning pancakes now. The trees that make maple syrup will struggle to survive climate change, a new study reveals. Researchers had thought that pollution from cars, factories, and agriculture might buffer sugar maples against an increasingly warm and dry climate by supplying soils with fertilizing nitrogen. But the new analysis, which examined 20 years of tree and soil data in four Michigan locations, finds that extra boost of nitrogen won't be enough. Instead, the researchers report today in Ecology, a lack of water will stunt the trees' growth.
United States

US Doctors Plan To Treat Cancer Patients Using CRISPR (technologyreview.com) 53

An anonymous reader shares a report: The first human test in the U.S. involving the gene-editing tool CRISPR could begin at any time and will employ the DNA cutting technique in a bid to battle deadly cancers. Doctors at the University of Pennsylvania say they will use CRISPR to modify human immune cells so that they become expert cancer killers, according to plans posted this week to a directory of ongoing clinical trials. The study will enroll up to 18 patients fighting three different types of cancer -- multiple myeloma, sarcoma, and melanoma -- in what could become the first medical use of CRISPR outside China, where similar studies have been under way. An advisory group to the National Institutes of Health initially gave a green light to the Penn researchers in June 2016, but until now it was not known whether the trial would proceed.

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