Death’s-head moths correct course based on an internal “compass,” a new study finds, revealing insights into how insects traverse such long distances during seasonal migrations.
This week’s stories of the week include: 00:18 Best ways to stay cool 01:31 Berlin Airport to become Eco neighbourhood 02:58 German city goes dark to save energy 04:22 South African Clean Water Solution
Marram grass, or beachgrass, grows on and stabilizes coastal sand dunes on Ireland’s Dingle Peninsula. Grasses, whether terrestrial or submarine, tend to be undervalued but have influenced the trajectory of human history through their domestication as food staples, as well as natural ecosystems worldwide. If restored and conserved appropriately, grasslands can benefit climate change mitigation efforts. See the special section beginning on page 590.
A new special issue of Science explores the unrecognized value of grass: https://fcld.ly/bo80dpr
Lebanon is now going through the worst economic crisis in its history. 80 per cent of the population lives below the poverty line. In one year, food prices have jumped 500 per cent due to galloping inflation. Lebanon was long regarded as the Switzerland of the Middle East.
But those days are gone. A series of crises have plunged the nation into the abyss. And its people are suffering. For Riad, who runs a grocery store in the suburbs of Beirut, business has become hellish. Every morning, calculator in hand, he changes the labels of his products according to the day’s exchange rate. An operation made all the more complex by the fact that his store is plunged into darkness, due to a lack of electricity.
The Lebanese government no longer provides more than two hours of electricity per day in the country. It is impossible for the population to heat, light or use their refrigerators. Taking advantage of the situation, a network of private generators has emerged. The Lebanese pound, the local currency, has lost 90 per cent of its value.
The only people unaffected are those paid in dollars. The greenback, which can be exchanged for a small fortune against the local currency, has created a new privileged social class in the country. A salesman in an international pharmaceutical company, Joseph lives like a king in a ruined Lebanon. Thanks to his new purchasing power, he repaid his mortgage in two months, instead of… twenty years!
In a bankrupt state, plagued by corruption, six out of ten Lebanese now dream of leaving the country. In Tripoli, in northern Lebanon, Mohammed and his son set out for Germany by sea. Even though the trip was cut short off the Turkish coast, the young father is still ready to take all possible risks to reach the European Eldorado.
An individual’s social network and community — their ‘social capital’ — has been thought to influence outcomes ranging from earnings to health. But measuring social capital is challenging. In two papers in this week’s issue, Raj Chetty and his colleagues use data on 21 billion friendships from Facebook to construct a Social Capital Atlas containing measures of social capital for each ZIP code, high school and college in the United States. The researchers measure three types of social capital: connectedness between different types of people, social cohesion and civic engagement. They find that children who grow up in communities where people of low and high socio-economic status interact more have substantially greater chances of rising out of poverty. The team then examines what might limit social interactions across class lines, finding a roughly equal contribution from lack of exposure — because children in different socio-economic groups go to different schools, for example — and friending bias, the tendency for people to befriend people similar to them.
Rarely have I heard of a book with a weirder title, but Grant explains this book about how animals think is actually as useful as it is interesting. “A dazzling, delightful read on what animal cognition can teach us about our own mental shortcomings,” he writes. “I tore through his book in one sitting. I dare you to read it without rethinking some of your basic ideas about intelligence.” (It’s out August 9th.)
2. The Neuroscience of You by Chantel Prat
“Move over, outer space–this book is a stunning tour through inner space. This neuroscientist has a rare, remarkable gift for making neurons sing and dendrites dance. She’s written the smartest, clearest, and funniest book I’ve ever read about the brain,” Grant enthuses about The Neuroscience of You. (Out August 2nd.)
3. What We Owe the Future by Will MacAskill
Grant isn’t the only public thinker raving about this book by an Oxford philosopher about our “moral responsibility to do right by our grandchildren’s grandchildren.” “This book will change your sense of how grand the sweep of human history could be, where you fit into it, and how much you could do to change it for the better. It’s as simple, and as ambitious, as that,” says Ezra Klein. (Out August 16th.)
4. Longpath by Ari Wallach
Next on the list is another book about long-term thinking (apparently a preoccupation of Grant’s at the moment). He explains his second pick on the topic this way: “This book is an antidote to nearsightedness. A futurist offers an actionable guide for planning multiple generations in the future.” (Also out August 16th.)
5. Both/And Thinking by Wendy Smith and Marianne Lewis
This book by a pair of business school professors is specifically aimed at leaders trying to navigate uncertain times. “Life is full of paradoxes, and too often we ignore them or try to erase them when we should be learning how to manage them. Two top scholars of paradox examine how to embrace tensions and overcome tradeoffs,” says Grant. Fellow business writer Tom Peters is more succinct: “This book is, pure and simple, a masterpiece.” (Out August 9th)