las 7 maravillas del mundo antiguo

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Off-peak cooling systems don't only shift the demand for power to a different time of day, they create a more stable cooling environment that can deliver the same cooling capacity with less energy consumption. They bring less efficient, dirtier plants on line if they need them and buy energy from other power plants on the grid at premium prices, passing those charges along to their customers. They also expand their facilities when they can't meet current or projected demand. Making the energy grid more efficient by distributing the demand for electricity and reducing energy consumption by running air conditioning at optimal performance reduces greenhouse gas emissions and forestalls the need for more energy plants to handle the load. On the next page, we'll take a look at how off-peak cooling systems can work at night and still cool the air during the hottest part of the day. These coils circulate ethylene or propylene glycol.|Politics is a tough, nasty business. Perhaps it's no surprise that things can get a little testy when you put a bunch of impassioned leaders with different ideas about how a government should run in the same room. Lawmakers are often called on to make decisions that can impact the health, safety and financial well-being of the people they represent. But physical fights aren't something relegated to the days of famous duels. Sometimes even today our representatives decide to sharpen their elbows and let a few haymakers fly. Think the first round of Trump vs. Clinton got a little crabby? Check out the video at the top of this article and look what happened when a local TV station in Georgia put two candidates for parliament together at the same table. The trouble started when Polad Khalikov called opponent Vepkhia Gurgenishvili "scum". Gurgenishvili responded by hurling a pen at Khalikov. It escalated into what looks like a brief slap fight that briefly involved the host, all while the cameras kept rolling. Earlier this year, he spoke in Seattle about the current state of the field at the annual meeting of the American Association for the Advancement of Science. Knowable Magazine talked with Keith about how the scientific, technological and geopolitical landscape has changed in the intervening decades. Twenty years ago you called geoengineering "deeply controversial." How has the controversy changed since then? Back then it was something that a pretty small group of people who thought about climate knew about - and mostly agreed they wouldn't talk about. And that was it. Now it's much more widely discussed. I think the taboo is reduced, for sure. It's certainly still controversial, but my sense is that there has been a real shift. An increasing number of people who are in climate science or in public policy around climate or in environmental groups now agree that this is something we should talk about, even if many think it should never be implemented. There's even growing agreement that research should happen. hana kimura

















































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