• It May Not Cost You More To Drive Home In A Climate-Friendly Car

    It has been a common belief that low-emissions vehicles, like hybrids and electric cars, are more expensive than other choices. But a new study finds that when operating and maintenance costs are included in a vehicle's price, cleaner cars may actually be a better bet.

    >> Read the Full Article
  • Fate of turtles and tortoises affected more by habitat than temperature

    Habitat degradation poses a greater risk to the survival of turtles and tortoises than rising global temperatures, according to new research.

    More than 60 per cent of the group are listed by the International Union for Conservation of Nature (IUCN) as vulnerable, endangered, or critically endangered, because they are being traded, collected for food and medicine and their habitats are being degraded. Understanding the additional impact of global warming and changes in rainfall patterns on their diversity and distributions is therefore paramount to their conservation.

    >> Read the Full Article
  • Acidity in atmosphere minimized to preindustrial levels

    New research shows that human pollution of the atmosphere with acid is now almost back to the level that it was before the pollution started with industrialization in the 1930s. The results come from studies of the Greenland ice sheet and are published in the scientific journal, Environmental Science and Technology.

    The Greenland ice sheet is a unique archive of the climate and atmospheric composition far back in time. The ice sheet is made up of snow that falls and never melts, but rather remains year after year and is gradually compressed into ice. By drilling ice cores down through the kilometre-thick ice sheet, the researchers can analyse every single annual layer, which can tell us about past climate change and concentration of greenhouse gases and pollutants in the atmosphere.

    >> Read the Full Article
  • Millions of Trees are Dying Across the US

    Throughout the U.S., trees are dying at an astonishing rate. The reasons for the die-off vary from location to location — drought, disease, insects and wildfires – but the root cause in many of these cases is the same: climate change.

    The epidemic is even threatening the oldest white oak tree in America, a 600-year-old giant in New Jersey that predates Columbus’ visit to the Americas.

    >> Read the Full Article
  • A Cruise Ship Just Sailed the Northwest Passage, Thanks to Climate Change

    The Northwest Passage originated as an unattainable and lethal legend when Europeans arrived in the Americas and longed for an easy sea route across North America. Now, a cruise ship has successfully traversed the route in only a month.

    It wasn’t until 1906 that Norwegian explorer Roald Amundsen successfully — but with extreme difficulty — navigated what had, until then, been a theoretical journey. In the years since, heavily fortified ships with icebreakers could only make it through the floes of the Arctic in summer, when sea ice was at its lowest.

    Now, a massive 14-deck cruise ship has completed the journey that was a pipe dream just over one hundred years ago — and it’s raising a lot of concerns.

    >> Read the Full Article
  • Soil will absorb less atmospheric carbon than expected this century, study finds

    By adding highly accurate radiocarbon dating of soil to standard Earth system models, environmental scientists from the University of California, Irvine and other institutions have learned a dirty little secret: The ground will absorb far less atmospheric carbon dioxide this century than previously thought.

    Researchers used carbon-14 data from 157 sample sites around the world to determine that current soil carbon is about 3,100 years old -- rather than the 450 years stipulated by many Earth system models.

    "This work indicates that soils have a weaker capacity to soak up carbon than we have been assuming over the past few decades," said UCI Chancellor's Professor of Earth system science James Randerson, senior author of a new study on the subject to be published in the journal Science. "It means we have to be even more proactive in finding ways to cut emissions of fossil fuels to limit the magnitude and impacts of climate warming."

    >> Read the Full Article
  • Greenland ice is melting seven percent faster than previously thought

    The same hotspot in Earth's mantle that feeds Iceland's active volcanoes has been playing a trick on the scientists who are trying to measure how much ice is melting on nearby Greenland.

    According to a new study in the journal Science Advances, the hotspot softened the mantle rock beneath Greenland in a way that ultimately distorted their calculations for ice loss in the Greenland ice sheet. This caused them to underestimate the melting by about 20 gigatons (20 billion metric tons) per year.

    >> Read the Full Article
  • Where and how climate change is altering species

    New research published Monday (Sept. 19) in the journal Nature Climate Change by researchers at Aarhus University in Denmark and the University of Wisconsin-Madison illuminates where and why novel species combinations are likely to emerge due to recent changes in temperature and precipitation. The study includes global maps of novelty that offer testable predictions and carry important implications for conservation and land management planning.

    >> Read the Full Article
  • Soil management may help stabilize maize yield in the face of climate change

    How will we feed our growing population in the face of an increasingly extreme climate? Many experts suggest the answer lies in breeding novel crop varieties that can withstand the increases in drought, heat, and extreme rainfall events predicted in the not-too-distant future. But breeding is only part of the equation, according to new research from the University of Illinois and several collaborating institutions across the Midwestern U.S.

    "It might not be necessary to put all the stress of climate adaptation and mitigation on new varieties. Instead, if we can manage agroecosystems more appropriately, we can buffer some of the effects of climate instability," says U of I and USDA Agricultural Research Service ecologist Adam Davis.

    >> Read the Full Article
  • Arctic Sea Ice Extent in 2016 Ties as Second Lowest in The Satellite Record

    Arctic sea ice extent shrank to 1.6 million square miles earlier this month — tying 2016 with 2007 as the second lowest sea ice minimum since satellite records began. The lowest year remains 2012. The new measurements follow a decades-long trend of declining sea ice extent in the Arctic as global temperatures rise. 

    >> Read the Full Article