…Online at URL https://www.bts.gov/ntl/. 34US Department of Transportation (1997) National Transportation Statistics 1997 (Washington, DC: Bureau of Transportation Statistics). Online at https://www.bts.gov/btsprod/nts/. 35J. H. Ausubel and C. Marchetti (1996) ‘Elektron’, Daedalus 125, 139-169. 36M. Jufer…
…(kW), a big increment to the present $200 per kW for a simple turbine and $300-$400 for a combined cycle generator. Present limits of about 100 hertz are not fast…
…several government agencies and trade associations, has begun a financial exchange for trading scrap materials. Other exchanges such as the National Materials Exchange Network (NMEN) and the Global Recycling Network…
…clapping belts. But the network of beams, blocks, cords, and drums for transmitting t he steam power to the machinery on the floor encumbered, endangered, and clamored. The electric motor…
The proletariat of American research, the graduate students and the postdocs, cry and whisper. Internet traffic even suggests they organize. At Yale, some struck. Meanwhile, William Massy of Stanford University…
…himself. Paulus Potter believed the stag’s glowing cross converted St. Hubert to sustainability. The hunter remained unreconstructed. With Paulus and Hubert, we can agree on the vision of a planet…
…1990); US Department of Transportation, National Transportation Statistics (Washington, DC: Bureau of Transportation Statistics, 1999). Online at https://www.bts.gov/btsprod/nts/. Figure 4. The maximum size of power plants, US. Each line represents…
…Greater wealth enables people to buy higher speed, and when transit quickens, cities spread. Both average wealth and numbers will grow, so cities will take more land. What are the…
This paper was first published in 1992 in the Annual Review of Energy and Environment, https://www.annualreviews.org. The paper posted here was scanned and re-typeset in HTML. Every effort was made…
…and 100 of paper mill waste, 88 were harvested from forests for fuel in 1993 (figure 3). After rising fourfold since 1970 to about 15% of the total harvest during…