And back to Scirus, the compendium of scientific publication. Okay, it's a search engine returning titles of journals, patents, etc.
What are we to make of the fact that searching for global warming on Scirus returns 100,000 more results than a similar search for nanotechnology? It's been studied for 20 years longer than nanotechnology, so global warming should reflect that... But there are 8,000 fewer academic articles in the database (28,000 for nanotech vs. 20,584 for global warming). What does that mean?
We found 5,184 patents on the Scirus database for nanotechnology. For global warming... 9,419. Scientists and technologists have been studying global warming for more than twice as long, so that may mean nothing. But, let's look at the statistics and see what they tell us.
As shown below, playing by the same rules as we did for nanotechnology and the study of Mars, we hereby proclaim a base year of 1975, as it saw 18 journal articles published and one patent filed. That gives us 31 years to measure growth. This indeed gives us a CAGR (Compound Annual Growth Rate) of 16.85%, which in fact does show doubling every five years! Hooray, we have another winner!
The CAGR for patents is higher yet--26.08%. (But again, it seems to have leveled off in 2002.) We saw below that growth was disappointing in the subsector of climate modelling, but it's being more than made up for elsewhere.
But, given the potential gravity of the consequences of global warming, am I the only one to look at the growth rates of human knowledge in this field, compare them to the growth rates for nanotechnology, and feel slightly disappointed?
The data is below. Click if you want to see the numbers.
Year Journals Patents
2007 978 202
2006 2,247 1,318
2005 1,957 1,330
2004 1,543 1,292
2003 1,597 1,236
2002 1,412 1,027
2001 1,269 747
2000 1,128 438
1999 894 357
1998 1,007 285
1997 1,091 227
1996 1,382 204
1995 992 167
1994 650 136
1993 262 168
1992 277 135
1991 208 89
1990 147 21
1989 263 13
1987 141 0
1986 95 0
1985 101 0
1984 129 0
1983 72 0
1982 80 0
1981 75 0
1980 48 0
1979 72 0
1978 35 0
1977 47 1
1976 26 0
1975 18 1
1974 14 0
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