Natural gas has no odor, but you can smell a leak thanks to the addition of an odorific mercaptam compound. Do carbon dioxide and other similarly odorless greenhouse gases (GHGs) require some analogous device to make their presence known and thus prompt evasive action? Yes, and for these ubiquitous gases, it will be a visual cue indicating the source and quantity of GHGs Continue reading
Last year Swiss researchers demonstrated that European countries release more of the potent greenhouse gas trifluoromethane than they report. It was just the latest in a growing number of case studies showing that polluters and governments might be under-estimating their climate change impact, but it served to highlight the science and technology that can reveal such cheating Continue reading
Late last week President Barack Obama deferred consideration of the Keystone XL oil pipeline, designed to ship Alberta petroleum to the Gulf Coast, until after next year’s U.S. elections. Obama’s move immediately sparked vows in Canada to redirect crude exports to Asian markets less angst-ridden by the environmental impacts associated with tapping Alberta’s tough, tarry petroleum. A smarter strategy would be to reduce those impacts, starting with the black mark that brought Keystone XL to national attention: oil sands crude’s bloated carbon footprint. Continue reading
In January we reported that winds across the Northern continents were losing some of their punch, and that climate change threatened to weaken them further — altogether bad news for wind power. In stark contrast, Australian researchers report today in the journal Science that gusts are accelerating over Earth’s oceans.
Unfortunately the trend offers offshore wind power a mixed bag: stronger but also more dangerous winds. “Mean wind conditions over the oceans have only marginally increased over the last 20 years. It is the extreme conditions where there has been a larger increase,” says Ian Young, vice chancellor at the Australian National University in Canberra and principal author of today’s report. Continue reading