New analysis from the World Health Organization (WHO) links exposure to air pollution to roughly 7 million deaths annually. The report confirms that air pollution is now the world's largest environmental health risk. It estimates 4.3 million people died in 2012--mainly due to cooking inside with coal or wood stoves. Another 3.7 million died from outdoor pollution, including diesel engine and factory emissions. The figures--more than double previous estimates--indicate that air pollution kills more people than smoking, diabetes and road deaths combined.
"The risks from air pollution are now far greater than previously thought or understood, particularly for heart disease and strokes," said Maria Neira, director of WHO's Department for Public Health, Environmental and Social Determinants of Health. "Few risks have a greater impact on global health today than air pollution; the evidence signals the need for concerted action to clean up the air we all breathe."
The Western-Pacific region--including China, Japan and Australia--represented 41 percent (2.88 million) of the global deaths due to air pollution in 2012. In that year, countries in this region combined with countries in southeast Asia accounted for 5.8 million air pollution-related deaths.
Only three of 74 Chinese cities fully complied with state pollution standards in 2013. Earlier this month, Chinese Premier Li Keqiang classified air pollution as a top priority for the nation's authorities. China is now using drones to spy on industries in Beijing and other cities where illegal polluting may be contributing to the nation's smog problem. These unmanned crafts take photographs of smokestack scrubbers and assess smoke color in the images for pollution.
"You can easily tell from the color of the smoke--black, purple, brown--that the pollution is over the limit, because if smokestack scrubbers are operating properly, only white smoke is emitted," said ministry official Yang Yipeng.
In new tests led by the China Meteorological Administration, drones could be used during peak air pollution periods to spray chemicals that freeze pollutants, allowing them to fall to the ground.
Texas Disaster Puts Oil Spills in Spotlight
As news headlines commemorated the 25th anniversary of the Exxon Valdez disaster, in which more than 10 million gallons of crude oil were spilled in the waters off Alaska, emergency crews were dealing with a new disaster in one of the country's busiest shipping channels: the Houston Ship Channel.
Though millions of gallons smaller than the Exxon Valdez spill or the BP's Deep Horizon spill in 2010, the spill from a barge collision near Galveston closed the shipping lane for several days while a high-tech buoy system helped guide the cleanup.
Since the Exxon Valdez, the United States has experienced at least two-dozen major oil spills, ranging from a few hundred to millions of gallons. Scientists are still discovering the ecological costs associated with these spills.
A new study published in the journal Proceedings of the National Academy of Sciences finds grim implications for the hearts of fish that were embryos, larvae or juveniles at the time of the BP oil spill, which coincided with tuna-spawning season. Led by the National Oceanic and Atmospheric Administration (NOAA), the study links the spill to potentially lethal heart defects in species of tuna, amberjack and other predatory fish.
"Larvae exposed to high levels were dead within a week," said study leader John Incardona. "But we still don't know how long they lived after exposure to lower levels [of crude oil], or how much spawning area may have been impacted."
The NOAA study follows research out in February suggesting that low concentrations of crude can disrupt the signaling pathways responsible for regular heart rhythms in fish.
Renewable Energy Makes Strides
Cheap installation costs, high electricity prices and government subsidies have allowed the cost of solar power to stay on par with the cost of traditional energy sources--at least in Germany, Spain and Italy. That's according to a new report by the consulting firm Eclareon. "Soft costs" and demand are keeping the same from ringing true in the United States, according to The Week.
A new experimental house--developed by the University of California, Davis, and Honda--is designed to generate more electricity than it consumes and to store the extra energy in a car's battery for later use.
"It's a new world in terms of vehicles operating not as isolated artifacts but as being part of a larger energy system, and I think the greatest opportunity for automakers is figuring out how their vehicles become part of that system," said Daniel Sperling, director of the Institute for Transportation Studies at the University of California, Davis.
The home uses a geothermal system to provide heating and cooling. Solar panels, energy-efficient automated lighting, electric vehicle charging and pozzolan-infused and post-tensioned concrete use less than half of the energy of a similarly sized new home in the Davis area.
The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University's Nicholas Institute for Environmental Policy Solutions.