Articles by Joseph Romm

Sure looks that way

Back in May, I was seduced by GM's seeming sincerity in developing a plug-in hybrid electric vehicle, the Chevy Volt. We must always remember, however, that GM is a master greenwasher.

Smacking down a bad idea

I know you've all been eagerly waiting for this (don't worry, I don't have many more rules). I got sidetracked by last week's offset hearing.

Offset projects should deliver climate benefits with high confidence -- that's a key reason trees make lousy offsets, especially non-urban, non-tropical trees. An even more dubious source of offsets is geo-engineering, which is "the intentional large scale manipulation of the global environment" (PDF) to counteract the effects of global warming.

As John Holdren, President of the American Association for the Advancement of Science, noted in 2006 (PDF), "The 'geo-engineering' approaches considered so far appear to be afflicted with some combination of high costs, low leverage, and a high likelihood of serious side effects."

More great news from the climate

Nature has published another landmark study showing how the complex interplay of human-generated pollution with natural systems worsens climate change. Their news article (subs. req'd) explains:

Rising levels of ozone pollution over the coming century will erode the ability of plants to absorb carbon dioxide from the atmosphere, a new climate-modelling study predicts.

Ozone is already known to be a minor greenhouse gas, but the new calculations highlight another, indirect way in which it is likely to influence global warming by 2100. High levels can poison plants and reduce their ability to photosynthesize, says Stephen Sitch of the UK Met Office's Hadley Centre for Climate Prediction and Research in Exeter.

Note this is actually a new amplifying feedback, since the hotter it gets the more ozone pollution is generated.

Below the fold is the rest of this article -- and for you hardcore science types, I'll end with the abstract of the original journal article.

Yeah, coal again

Still more from James Hansen's email: