Some 20 years ago I used to be more optimistic about hydrogen as a motor fuel, yet I became more skeptical about it around 2004. Biodiesel, ethanol and natural gas (eventually also considering biomethane) sound more realistic to me in a 3rd-world country.
Quote:
Originally Posted by mort
Hydrogen seeps are believed to be the cause of geological depressions called "Fairy Circles" and there are fairy circles in North Carolina, Brazil, Russia, and Mali.
|
Where in Brazil? Never heard about it.