Environmental News Network

Reducing emissions to combat climate change
Climate engineering is unlikely to provide an effective or practical solution to slowing global warming, according to a new study. Reducing the release of carbon remains the only likely answer to tackling climate change ahead of fanciful projects such as positioning giant mirrors in space to reduce the amount of sunlight being trapped in the earth's atmosphere or seeding clouds to reduce the amount of light entering earth's atmosphere. >> Read the Full Article
Antarctica, the Southern Ocean, and Climate Change
A special issue of the Philosophical Transactions of the Royal Society A has been published today (Monday 2 June) which brings together a collection of papers on many of the unresolved issues relating to the Southern Ocean. Professor Michael Meredith from the British Antarctic Survey was a guest editor on the issue; 'The Southern Ocean: new insights into circulation, carbon and climate'. The research includes: Why greenhouse gases and the ozone holes are melting the Arctic sea ice but are having a cooling effect in some parts of Antarctica, and how dust, which provides iron and essential nutrients to the ocean, might have been the cause of increased biological productivity in the southern Atlantic Ocean during the last ice age. >> Read the Full Article
Utility emissions in US trending down
A new report on U.S. power plant emissions from the country's top 100 electric power producers shows a downward trend in nitrogen oxides (NOx), sulfur dioxides (SO2), mercury and carbon dioxide (CO2) since 2000, with CO2 emissions decreasing 13 percent between 2008 and 2012. The findings show that the industry is already shifting toward a combination of increased energy efficiency and lower carbon fuel sources, which should help it meet new Environmental Protection Agency (EPA) carbon standards expected to be announced on June 2. "The electric power industry is firmly on the path toward a low carbon energy future, and history shows that it is not only capable of meeting new pollution limits, but that it can do so while keeping our lights on and our economy growing," said Mindy Lubber, president of Ceres, a nonprofit sustainability advocacy group which helped produce the report. "EPA's proposed standards will stimulate further investment in low-carbon, low-risk resources like renewable power and energy efficiency." >> Read the Full Article
British Airways Turns Garbage into Jet Fuel: Sustainable Solution or Incineration in Disguise?
Can garbage power your plane ride from New York to London? Thatâ€™s the idea behind a new production plant that will transform waste from London's homes and businesses into a jet fuel that costs about the same price as conventional petroleum-based fuel but burns cleaner and produces fewer carbon emissions. >> Read the Full Article
Zebras Break Record for Africa's Longest Terrestrial Migration
With food and water scarce in many parts of Africa, many species migrate long-distances in order to survive. A new study published in the journal, Oryx has found a new record-breaker for the continentâ€™s longest tracked terrestrial migration: a huge group of zebras that traveled a total distance of 500 kilometers (300 miles). >> Read the Full Article
How Sharks Could Help Predict Hurricanes
Scientists have embarked on a remarkable new project to use shark and large marine predators as biological sensors in the hopes that they could help us predict the formation and course of potentially dangerous hurricanes. Researchers from the University of Miami have tagged a total of 750 marine animals in the past ten years, all to track the temperature and salinity of sea waters at different depths. Earlier this year though, the researchers noticed something special about the data â€” the tagged marine life gravitated toward water that was about 79 degrees Fahrenheit or higher, which is the temperature at which hurricanes form. >> Read the Full Article
New insight on Antarctic Ice Sheet behavior at end of the last ice age
A new study has found that the Antarctic Ice Sheet began melting about 5,000 years earlier than previously thought coming out of the last ice age â€“ and that shrinkage of the vast ice sheet accelerated during eight distinct episodes, causing rapid sea level rise. The international study, funded in part by the National Science Foundation, is particularly important coming on the heels of recent studies that suggest destabilization of part of the West Antarctic Ice Sheet has begun. >> Read the Full Article
April Ties For Warmest On Record
Globally, this April was a scorcher, tying with 2010 for the warmest April on record, according to new data released by the National Oceanic and Atmospheric Administration (NOAA) last week. >> Read the Full Article
Rules to cut carbon emissions also reduce harmful air pollution
Setting strong standards for climate-changing carbon emissions from power stations would provide the added bonus of reducing other air pollutants that can make people sick and damage the environment. A first-of-its-kind study released today by scientists at Syracuse University and Harvard has mapped the potential environmental and human health benefits of power plant carbon standards and found potential for reductions of more than 750 thousand tons of other harmful air pollutants across the US. >> Read the Full Article
Groundwater and Glaciers
Subglacial lakes in Antarctica might have nutrient-rich groundwater flowing into them, say scientists investigating the origin of the water in ice streams. Ice streams are huge, fast-flowing glaciers that meander across Antarctica. They are responsible for nearly all of the Antarctic's contribution to sea-level rise, yet scientists have little understanding of where the water flowing through them comes from. This means that the contents of the subglacial lakes which lie underneath these streams is also a mystery. >> Read the Full Article