…could not have a rail siding to deliver its coal supply nor the acreage to store its coal. Oil had a higher energy density than coal–plus the advantage of flowing…
…never had much appeal. The weight and volume of the fuel were hard problems, especially for a highly distributed transport system. Oil had a higher energy density than coal—and the advantage…
…take known risks (such as smokers)? Are addicts volunteers? 15. Cost. Theoretically, decisions to reduce risk are supposed to be based upon the cost per unit of reduced risk. But it’s…
…a broad mid-range of additions to capacity. At prices up to about $4.50 per million BTU, twice the recent average price, gas should gradually drive coal from power stations. Approaching…
…Legislation, such as the U.S. Clean Water Act of 1972, encouraged reduction of discharges and recycling and conservation as well as shifts in relative prices. Although water treatment may cost…
…became the more valued solid and paper products. Had the practices and product mix of 1970 continued to 1993, American mills would have needed about 120 106m3 of additional roundwood for…
…d’écoute sur les océans apaisé par Covid https://yourtopia.fr/un-reseau-mondial-decoute-sur-les-oceans-apaise-par-covid-france-24/ BBC News Online, Ocean noise: Study to measure the oceans’ ‘year of quiet’ https://www.bbc.com/news/science-environment-56676820 BBC World Service Radio, 1st story, with Ed…
The entire issue of Population and Development Review with our article about Peak Farmland is now online: Population and Public Policy: Essays in Honor of Paul Demeny https://www.popcouncil.org/publications/books/2012_PDRSuppPopPublicPolicy.asp and will…
…time. However, achieving further advances, especially cost effectively, in reducing mortality and morbidity and improving other measures of health and environmental quality will require new strategies that can address the…
…Agencia EFE, via Infobae, Argentina Expertos piden reducir hasta un 90 % los desechos marinos antes de 2030 https://www.infobae.com/america/agencias/2021/11/17/expertos-piden-reducir-hasta-un-90-los-desechos-marinos-antes-de-2030/ Newsbreak, United States A Clean Ocean by 2030: UN Experts’ “Clean…