This has just showed up on Slashdot and makes for a very interesting read.

| Limits On Growth of Energy Use and Economies
| from the but-infinite-growth-sounds-fun dept.
| posted by Soulskill on Tuesday August 02, @20:00 (Power)
| with 462 comments
| https://hardware.slashdot.org/story/11/08/02/2315207/Limits-On-Growth-of-Energy-Use-and-Economies?utm_source=newsletter&utm_medium=email

[0]snoop.daub writes "Dr. Tom Murphy, professor of astrophysics at UCSD, has a new blog called 'Do The Math,' and the first few posts are doozies. In the first, he shows [1]the impossibility of continued exponential growth in energy use. Even if a new, 'free' energy source is developed, thermodynamic limits on efficiency mean that the heat associated with converting this energy into useful work will increase the temperature of the earth to unbearable levels within 300 years. In the second, [2]he extends the argument to economic growth. The timescales there are faster, only 50-100 years. Fascinating stuff. Time to stop breeding, folks, or to get our butts into space."
Discuss this story at:
https://hardware.slashdot.org/story/11/08/02/2315207/Limits-On-Growth-of-Energy-Use-and-Economies?utm_source=newsletter&utm_medium=email#commentlisting
Links:
0.
mailto:snoop.daub@gmail.com
1. http://physics.ucsd.edu/do-the-math/2011/07/galactic-scale-energy/
2. http://physics.ucsd.edu/do-the-math/2011/07/can-economic-growth-last/