…locomotive did in the nineteenth century, halving the cost of land transport. The railroads penetrated the great land masses of North America and Australasia. Their operations were little affected by…
…variable cost combine with base-loads plants with high capital cost and low variable cost to determine the current usage level. Although the utilization factor surely has a logical upper limit…
…2020, leading to a fleet of 500 5 GW ZEPPs by 2050. This does not seem an impossible feat for a world that built today’s worldwide fleet of some 430 nuclear…
…establish both legal and practical jurisdiction. Does the body considering action have legal responsibility? Is it in a position to take action? Is it owner or responsible party or does…
…place. Studies by forest experts in Finland reveal that by the 1980s, wooded areas were increasing in all major temperate and boreal forests. These mid- and high-latitude forests account for…
…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…
…use of the new data to explain and predict changes in populations and relations among them would probably cost little. A major outcome of the program would be an on-line…
…than bread or milk, or most anything that costs more than one ruble. I tried to buy a record. I was not succeeding. Finally somebody in the line spoke in…
…has conquered the earth can also spare it. To answer this question, I shall examine secular trends in what technology does with four paramount resources: energy, materials, land and water….
…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…