New research shows that injecting wastewater deep underground can cause earthquakes far from the injection site. It also raises questions about which rock layers are the safest injection targets.
Theodore Endreny, State University of New York College of Environmental Science and Forestry
In an increasingly urban world, trees can make a major difference. One study found that, for every dollar invested in planting, megacities saw a $2.50 return on their investment.
Perth, unlike Cape Town, faces no prospect of its tapwater running out. But other problems lurk beneath the surface, as the city’s drying climate puts increasing pressure on irrigation and wetlands.
Cities all over the world are facing growing challenges to provide clean, reliable water. And many of the fixes, such as desalination plants, have a huge carbon footprint.
With frigid temperatures and snow in the forecast, slippery roads can’t be far behind. Salt keeps roads safe, but it’s harmful to aquatic environments.
Developed and developing countries alike struggle with water quality problems. For World Water Day, a look at the challenges – and some potential solutions – to better treating wastewater.
Wastewater treatment systems around the world are hamstrung by outdated tests that don’t identify a growing array of pathogens or identify the sources of pollutants.
Edo, which gave rise to Tokyo, was also the world’s largest city three centuries ago. Facing ecological collapse, Edo developed a culture and practices that supported sustainable living.
There’s a debate over whether fracking should be introduced into Florida, a state with a unique geology and hydrology that introduces a long list of environmental concerns.
Long-term drought and water shortages in many parts of the U.S. are spurring interest in ways to reuse graywater – the water that drains from sources such as showers, bathtubs and washing machines.
Academic Officer, Water Resource Management Unit lead, Institute for Integrated Management of Material Fluxes and of Resource (UNU-FLORES), United Nations University