Current Status of Human Civilization
Further information: World energy resources and consumptionMichio Kaku suggested that humans may attain Type I status in about 100–200 years, Type II status in a few thousand years, and Type III status in about 100,000 to a million years.
Carl Sagan suggested defining intermediate values (not considered in Kardashev's original scale) by interpolating and extrapolating the values given above for types 1, 2 and 3, using the formula
- ,
where value K is a civilization's Kardashev rating and MW is the power it uses, in megawatts. He calculated humanity's civilization type (in 1973) to be about 0.7, with respect to this extrapolation (apparently using 10 terawatt (TW) as the value for 1970s humanity).
In 2008, total world energy consumption was 474 exajoules (474×1018 J=132,000 TWh), equivalent to an average power consumption of 15 terawatts (1.504×1013 W or 0.7 on the Kardashev scale).
The total photosynthetic productivity of earth is between ~1500–2250 TW, or 47,300–71,000 exajoules per year, making nature a 0.9 Kardashev scale civilization.
Read more about this topic: Kardashev Scale
Famous quotes containing the words current, status, human and/or civilization:
“Men perceive that equating love and domestic work is a trap. They fear that to get involved with housework would send them hurtling into the bottomless pit of self-sacrifice that is women’s current caring roles.”
—Debbie Taylor (20th century)
“screenwriter
Policemen so cherish their status as keepers of the peace and protectors of the public that they have occasionally been known to beat to death those citizens or groups who question that status.”
—David Mamet (b. 1947)
“It were a real increase of human happiness, could all young men from the age of nineteen be covered under barrels, or rendered otherwise invisible; and there left to follow their lawful studies and callings, till they emerged, sadder and wiser, at the age of twenty-five.”
—Thomas Carlyle (1795–1881)
“It seems to me that there must be an ecological limit to the number of paper pushers the earth can sustain, and that human civilization will collapse when the number of, say, tax lawyers exceeds the world’s total population of farmers, weavers, fisherpersons, and pediatric nurses.”
—Barbara Ehrenreich (b. 1941)