• EPA issues new soot pollution standard over industry’s objections

    The Environmental Protection Agency (EPA), acting under court order, on Friday issued a new standard for soot pollution; the agency estimates the cost of complying to be between $53 million and $350 million – and the estimated benefits to be between $4 billion and $9 billion; utilities, manufacturers, chemical companies, and the oil and gas industry asked for a delay in issuing the rule, arguing it would be costly to implement

  • To keep global average temperature from rising above 2°C, action should be taken by 2020

    Limiting climate change to target levels will become much more difficult to achieve, and more expensive, if action is not taken soon, according to a new analysis; a new study explores technological, policy, and social changes that would need to take place in the near term in order to keep global average temperature from rising above 2°C, a target supported by more than 190 countries as a global limit to avoid dangerous climate change

  • New view of meteorite impact

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    High-speed video of projectiles slamming into a bed of disks has given scientists a new microscopic picture of the way a meteorite or missile transfers the energy of its impact to sand and dirt grains; the research may change the way scientists model meteorite and missile impacts and their effects

  • Top U.S., Canadian officials meet to discuss quickening pace of Arctic changes

    One manifestation of global warming is the accelerating pace of Arctic ice-cap melting; the U.S. Navy Arctic Roadmap, authored by the Navy’s Task Force Climate Change, notes that, “Because the Arctic is primarily a maritime environment, the Navy must consider the changing Arctic in developing future policy, strategy, force structure and investment”; top U.S. and Canadian officials meet to discuss the implications of the rapidly melting arctic ice

  • Sandy exposes weaknesses of antiquated sewage systems in N.Y., N.J.

    Hurricane Sandy destroyed homes, apartments, and entire communities, and it also exposed the outdated sewage systems in New York and New Jersey; since Hurricane Sandy, millions of gallons of raw sewage have infiltrated waterways in both states, and it could take several years and billions of dollars to fix the systems; New York governor Andrew Cuomo estimated that it will cost about $1.1 billion to repair treatment plants; officials in the field say that much more will have to be done

  • Engineers to build Australia’s first bushfire resistant straw house

    With Australia’s bushfire season fast approaching, construction of the first bushfire resistant straw bale house tested by engineers from CSIRO has begun in rural Victoria; the house is based on design principles that minimize environmental impact and it is set to withstand temperatures equal to that of a worst case bushfire scenario

  • Target of limiting global warming to 2°C recedes as CO2 emissions grow

    A new report shows that global CO2 emissions have increased by 58 percent since 1990, rising 3 percent in 2011, and 2.6 percent in 2012; the most recent figure is estimated from a 3.3 percent growth in global gross domestic product and a 0.7 percent improvement in the carbon intensity of the economy; these latest carbon dioxide emission figures continue to track at the high end of a range of emission scenarios, expanding the gap between current trends and the course of mitigation needed to keep global warming below 2°C

  • Wind and solar power, paired with storage, would be cost-effective way to power grid

    Renewable energy could fully power a large electric grid 99.9 percent of the time by 2030 at costs comparable to today’s electricity expenses, new research says; a well-designed combination of wind power, solar power, and storage in batteries and fuel cells would nearly always exceed electricity demands while keeping costs low, the study authors found

  • Climate models still struggle with medium- term climate forecasts

    Scientists have evaluated twenty-three climate models and concluded that there is still a long way to go before reliable regional predictions can be made on seasonal to decadal time scales; none of the models evaluated is able today to forecast the weather-determining patterns of high and low pressure areas such that the probability of a cold winter or a dry summer can be reliably predicted

  • U.S. faces more – and more intense – wildfire

    Scientists using NASA satellite data and climate models have projected drier conditions likely will cause increased fire activity across the United States in coming decades; the researchers calculated results for low and high greenhouse gas emissions scenarios; in both cases, results suggest more fire seasons that are longer and stronger across all regions of the United States in the next 30-50 years; specifically, high fire years like 2012 would likely occur two to four times per decade by mid-century, instead of once per decade under current climate conditions

  • Geoengineering could disrupt global rainfall patterns

    Tackling climate change by reducing the solar radiation reaching our planet using climate engineering, known also as geoengineering, could result in undesirable effects for the Earth and humankind; in particular, new research shows that disruption of global and regional rainfall patterns is likely in a geoengineered climate

  • TVA considering raising height of dams to prevent future floods

    The dams located on the upper Tennessee River never had flood waters top them, and government officials want to keep it that way, saying that due to recent disasters such as the 2010 Nashville flood and the 2011Fukushima tsunami, they need to prepare the worst possible situation

  • Removing sea defenses may reduce impact of coastal flooding

    Coastal defenses put in place over the last century or so have re-shaped the U.K. coastline, artificially protecting some areas, but at the expense of beaches in adjacent areas; this man-made situation increases the risk of flooding in low lying coastal settlements where beaches act as a natural flood defense; beach levels can be artificially recharged, but maintaining this indefinitely along large stretches of coastline is costly and likely to be unsustainable

  • Pulverized rocks used to strip CO2 from emissions of steel, coal, cement plants

    Researchers in Quebec are developing a process which would see steel, coal, and cement plants as well as oil and gas facilities remove most of the carbon dioxide (CO2) from their emissions through chemical reactions with various types of crushed rocks in the stacks

  • Critics: post-Fukushima nuclear power may be safer, but it is still not cost effective

    The Southern Company wants to show its customers that it has learned from the Fukushima disaster in Japan and has protected its nuclear reactors to make sure the same thing does not happen in the United .States’ critics of nuclear power are not convinced – and also, they say, alternative energy sources, such as natural gas, are much cheaper to produce