Why do we need low-carbon energy – and how much is currently produced? | Environment | guardian.co.uk

The two main sources of low-carbon energy are renewables – which includes categories such as solar, wind, hydro, biomass and marine energy – and nuclear. In terms of total primary energy supply (i.e. raw energy created), data for 2008 suggest that fossil fuels provided around 85%, nuclear contributed around 2% and renewables provided around 13%. The renewables contribution breaks down by technology as follows:

Biomass (wood, etc): 10.2%
Wind: 0.2%
Hydropower: 2.3%
Marine: 0.0002%
Geothermal: 0.1%
Solar: 0.1%

Twitter / @FareedZakaria: If you take the entire wor ...

If you take the entire world’s battery capacity - every battery everywhere - it can store just 10 minutes of the world’s current energy use.

SF, CA - Climate Change Rally 9/24/11 (Part 1 of 2) - YouTube

San Francisco, CA - 9/24/11 [Vermont resident Bill McKibben showed up!]

David Karoly: our planet has a fever... | Rooted

Professor David Karoly, climate scientist at the School of Earth Sciences at the University of Melbourne, writes: It is beyond reasonable doubt that the global climate has warmed over the last fifty years. Our climate is getting hotter — it is developing a fever. This is a symptom of the underlying cause.