“ Along with reaping the benefits of harnessing the efficient productivity that life forms are capable of, we must also take extraordinary care not... (read full comment) ” 

Posted on January 5, 2011 at 1:27 PM EST

“ genetic manipulation I hope we take time to view potential solutions to the energy problem from a non-anthropomorphic point of view. We should... (read full comment) ” 

Posted on September 10, 2010 at 1:35 PM EDT

“ what about the rebar? As the CO2 absorbs into cement, the carbonate front migrates inward. When it reaches the rebar, the rebar rusts.....lessons... (read full comment) ” 

Posted on April 23, 2010 at 7:20 PM EDT

“ Not so simple I suspect there will be lots more to deal with than the simplified diagram suggests. Genetically engineered organisms can revert to... (read full comment) ” 

Posted on April 23, 2010 at 4:25 PM EDT

“ carbon nanotubes I hope developers of nanomaterial composites do not forget that many of these substances are inherently dangerous. We might... (read full comment) ” 

Posted on April 23, 2009 at 12:53 PM EDT

“ McMurdo Station After spending 3 seasons in Antarctica (at all 3 US stations), and working on Lunar projects here in the US, I can tell you that... (read full comment) ” 

Posted on November 28, 2007 at 11:47 AM EST

“ engine fires Most engines on cars that are not new have grease and some leaking oil on the outside surfaces. If you have ever put butter or oils... (read full comment) ” 

Posted on November 13, 2007 at 2:53 PM EST

“ This bug has already escaped! It is called a termite....and termites make up the largest biomass of any animal species in the rainforest. (read full comment) ” 

Posted on March 22, 2007 at 12:28 PM EDT