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The U.S. uses more air conditioning than all other countries combined. But according to a new study from Michael Sivak, a research professor at the University of Michigan, eight developing countries (including the six Asian countries previously listed) could eventually put the U.S. to shame when it comes to air conditioning use. Sivak developed an index for cooling demand by looking at mean daily outdoor temperatures and factoring those with population figures and distribution. He then normalized the index with U.S. values. The result is a projection for air conditioning usage if it were as widely used as in America: If the rest of the world caught up with the U.S., the 169 countries surveyed by Sivak could represent demand 45 times greater than current U.S. demand. If every country in the world were factored in, demand could be more than 50 times greater than in America. “It is clear that the global energy demand for air-conditioning will grow substantially as nations become more affluent, with the consequences of climate change potentially accelerating the demand.

This trend will put additional strain not only on global energy resources but also on the environmental prospects of a warming planet,” wrote Sivak.gree split air conditioner e1 Sivak isn’t making a prediction about when this spike in demand will happen. daikin split system air conditioner reviewsHe’s only projecting what would happen if countries adopted American standards of cooling. rooftop packaged ac unitsBut he points out some notable trends. In India, the country with the highest potential usage spike, air conditioning sales are increasing by 20 percent each year. And in China, 50 million air conditioning units were sold in 2010. Two other researchers at the Netherlands Environmental Assessment Agency projected that global warming could increase cooling demand by 72 percent by the end of the century.

In June, the International Energy Agency issued a report calling for basic efficiency standards for appliances, motors and air conditioning units in developing countries, concluding that these simple measures could account for half the carbon emissions reductions needed to stabilize global temperature rise at two degrees Celsius by mid century. Epson WorkForce WF-3640 All-in-One Color Inkjet Printer Shipping & Handling Included* Print/Copy/Scan/Fax, mobile printing with Apple® AirPrint™, Google Cloud Print™, Kindle Fire™ and Epson iPrint™ Mobile App, wireless and wired ethernet connections The estimated delivery time will be approximately 1-3 business days from the time of order. 16.8 in. x 17.7 in. x 12.1 in. Print, Copy, Scan, Fax 19 Page per Minute 10 Page per Minute ** State law may require sales tax to be charged on the pre-discounted price if the product is subject to sales tax. Standard shipping is via UPS Ground is included in the quoted price.

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10 Ways to Decorate Your Home With Velvet See Inside Leonardo Dicaprio's $11 Million Malibu home #TheLIST: Your Design Guide to Milan Inside Jackie Kennedy's Hamptons Childhood Home See Inside the Penthouse That Inspired Christian Grey's Digs in 'Fifty Shades of Grey' The Best Interior Design Moments of New York Fashion Week The Only Home Jackie and John Kennedy Built Together is for Sale 9 Wall Decorations That Enchant Upon First Glance #THELIST: 10 Tips to Throwing the Ultimate Late Summer Soiree Lucille Ball's Very First Los Angeles Home Is for SaleNBER Working Paper No. 10511 Issued in May 2004 Mortality rates in the US fell more rapidly during the late 19th and early 20th Centuries than any other period in American history. This decline coincided with an epidemiological transition and the disappearance of a mortality "penalty" associated with living in urban areas. There is little empirical evidence and much unresolved debate about what caused these improvements, however.

This paper investigates the causal influence of clean water technologies - filtration and chlorination - on mortality in major cities during the early 20th Century. Plausibly exogenous variation in the timing and location of technology adoption is used to idetify these effects, and the validity of this identifying assumption is examined in detail. We find that clean water was responsible for nearly half of the total mortality reduction in major cities, three-quarters of the infant mortality reduction, and nearly two-thirds of the child mortality reduction. Rough calculations suggest that the social rate of return to these technologies was greater than 23 to 1 with a cost per life-year saved by clean water of about $500 in 2003 dollars. Implications for developing countries are briefly considered. The NBER Bulletin on Aging and Health provides summaries of publications like this. You can sign up to receive the NBER Bulletin on Aging and Health by email. Machine-readable bibliographic record -