Mostrar mensagens com a etiqueta ciência. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta ciência. Mostrar todas as mensagens

04 setembro 2009

world's craziest geoengineering scheme

«A manmade volcano erupting continuously to shade the Earth until greenhouse gas levels in the atmosphere are brought down. Thousands of mirrors boosted into geosynchronous orbit to block sunlight. Crewless ships wander the oceans spewing saltwater into the air to increase cloud cover.

These are just a few of the proposals from scientists to manipulate, or geoengineer, the planet to stave off global warming.»

http://www.scientificamerican.com/podcast/episode.cfm?id=worlds-craziest-geoengineering-sche-09-09-03

11 abril 2008

microgrid



«Electricity is the lifeblood of modernity, but it is going to become much more expensive (fuel expense/availability) and unavailable (due to an increase in random failures via underinvestment to a plethora of black swan scenarios). As such, communities need to gain control over the flows of electricity in order to become resilient. One of the first steps towards this goal is through the concept of the Microgrid. Here's some background reading from the CERTS (Consortium for Electric Reliability Technology Solutions). Essentially it is a local power network connected to the national/regional grid through a smart switch.»
[http://globalguerrillas.typepad.com/globalguerrillas/2008/04/resilient-commu.html]

Lembra-me bastante a "teoria do rizoma", defendida por Jeff Vail.
http://www.jeffvail.net/2007/04/rhizome-theory-posts.html

Torno a aconselhar, vivamente!, e porque me parece fazer todo o sentido, a leitura de:
http://www.jeffvail.net/atheoryofpower.pdf

28 fevereiro 2008

tales from the DARK side



quem diz que a ciência não pode ser divertida?

«If WIMPs are really there, there are only a few per cubic meter in our galaxy, and most fly straight through ordinary matter without interacting.»
[via cosmic variance]


http://cosmicvariance.com/