Green Options

That’s right, the US government is “the single largest energy consumer in the U.S. economy.” In 2008 alone, it spent $24.5 billion on electricity and fuel.

This 28% reduction target Obama is ordering is equivalent to $8-11 billion in avoided energy costs. Additionally, it is far beyond the 17% reduction Obama has pledged to the international community for the US as whole, making the US government a leader by example on this issue.

NASA director (at the Goddard Space Flight Center) and top climate scientist James Hansen criticizes all ‘cap and trade’ strategies as doing “little to slow global warming or reduce our dependence on fossil fuels…[and which] allows polluters and Wall Street traders to fleece the public out of billions of dollars..” Hansen then offers an alternative, consumer-driven strategy (and a more radical one) that he calls ‘fee and dividend’.

The newest iteration of the climate bill in congress has just been scored by the non partisan congressional budget office and, as for the two previous climate bills (Waxman and Boxer), finds that Kerry-Graham-Lieberman would save money.

The destruction of the Earth’s protective ozone layer (and the growth of the “hole” in this layer over the South Pole) due to the action of human-made chemicals was the leading environmental issue of the last century (entering the public lexicon sometime in the mid 1980’s), and no doubt prompted wider concerns about “greenhouse” effects and global warming that occupy so much climate science reporting today. The main (or most publicized) culprit of this ozone loss was a chemical called [...]

As Arctic temperatures rise, precipitation rates, and snow/ice cover volumes, begin to change as well. In some cases, this has lead to an increase in vegetation, which can have the beneficial effect of reducing atmospheric CO2, but which can also cause a disruption in the trace gas exchange between earth and atmosphere. Also, many of these climate change impacts produce imbalances within ecosystems (the web of interactions between species, and between species and their environments) and these can and do [...]

The appeal of shortwave, geoengineering is in it’s purportedly rapid, remediation impact (although no global experiments have been conducted yet). However, the combined climate impact of GHG increases with a geoengineered reduction in shortwave radiation is not known, but, it is feared, could result in environmental “winners” and “losers”–meaning some regions of the planet could experience severe drought, and even increased conflict over water resources.

A new report ranks ten leading world cities on their greenhouse gas emissions. It also examines how and why the emissions differ.

As the report says, over 50% of the world’s population lives in urban areas. Leading cities of the world, global cities, are the places where greenhouse gas emissions really need to be cut. The greenest city from the study is Barcelona and the worst is Denver.

As climate scientists scour the Earth’s surface looking for indications of climate change impacts, freshwater lakes and reservoirs are becoming the sentinels of choice for many investigations. Although they make up a small percentage of the planet’s surface area, such bodies of water–small to large–are providing clues to past climate fluctuations, as their sediments and “catchments” (the total chemical and biological materials that result from the presence of the body of water) often record ancient climate impacts, and offer indicators [...]

Nature is not entirely defenseless against rising greenhouse gas (GHG) emissions. A class of elements called halogens (fluorine, chlorine, bromine, iodine, etc., often occurring in pairs) are emitted into the atmosphere via ocean spray, where they destroy ozone (O3), a significant greenhouse gas and aerosol that promotes warming.