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"With each interaction, Alexa is training to hear better, to interpret more precisely, to trigger actions that map to the user's commands more accurately, and to build a more complete model of their preferences, habits and desires. What is required to make this possible? Put simply: each small moment of convenience - be it answering a question, turning on a light, or playing a song - requires a vast planetary network, fueled by the extraction of non-renewable materials, labor, and data. The scale of resources required is many magnitudes greater than the energy and labor it would take a human to operate a household appliance or flick a switch. A full accounting for these costs is almost impossible, but it is increasingly important that we grasp the scale and scope if we are to understand and govern the technical infrastructures that thread through our lives. III The Salar, the world's largest flat surface, is located in southwest Bolivia at an altitude of 3,656 meters above sea level. It is a high plateau, covered by a few meters of salt crust which are exceptionally rich in lithium, containing 50% to 70% of the world's lithium reserves. 4 The Salar, alongside the neighboring Atacama regions in Chile and Argentina, are major sites for lithium extraction. This soft, silvery metal is currently used to power mobile connected devices, as a crucial material used for the production of lithium-Ion batteries. It is known as 'grey gold.' Smartphone batteries, for example, usually have less than eight grams of this material. 5 Each Tesla car needs approximately seven kilograms of lithium for its battery pack. 6 All these batteries have a limited lifespan, and once consumed they are thrown away as waste. Amazon reminds users that they cannot open up and repair their Echo, because this will void the warranty. The Amazon Echo is wall-powered, and also has a mobile battery base. This also has a limited lifespan and then must be thrown away as waste. According to the Ay

"Regardless of its provenance, the idea that debt and war are the two primary ways to control a nation is a great insight into the current geopolitical situation, especially the rise of China. China has benefited from the world order created by American military dominance, with its 11 carrier groups and hundreds of military bases straddling the globe. China is motivated by national pride and economic self-interest to extend its sphere of influence, but many of its thinkers are ideologically opposed to replicating the American model, a militarism that they still call 'Western imperialism'. "

"The casual observer can hardly comprehend the value-extracting power of hedge fund activists. Technically, they are no more than minority shareholders. Yet they exert enormous influence, often forcing these companies to undertake fundamental restructuring and to increase stock buybacks and dividends substantially. For instance, Third Point Management and Trian Fund Management, holding only 2% of the outstanding stock of Dow Chemical and DuPont, respectively, engineered a merger-and-split of America's top two chemical giants at the end of 2015 that resulted in both massive layoffs and the closure of DuPont's central research lab, one of the first industrial science labs in the United States."

In more than 1,000 years, the Atlantic Meridional Overturning Circulation (AMOC), also known as Gulf Stream System, has not been as weak as in recent decades. This is the result of a new study by scientists from Ireland, Britain and Germany. The researchers compiled so-called proxy data, taken mainly from natural archives like ocean sediments or ice cores, reaching back many hundreds of years to reconstruct the flow history of the AMOC. They found consistent evidence that its slowdown in the 20th century is unprecedented in the past millennium; it is likely linked to human-caused climate change. The giant ocean circulation system is relevant for weather patterns in Europe and regional sea levels in the U.S.; its slowdown is also associated with an observed cold blob in the northern Atlantic.