Petroleum, being a liquid compound, has very good migratory properties, and recovery methods take account of that - using various methods, oilers displace petroleum through cavities and vugs and extract it. However, sometimes oil is "locked" in low-permeability reservoirs, and water displacement used in such cases poses a high risk of reservoir flooding and workplace emergencies.
Diesel-polluted soil from now defunct military outposts in Greenland can be remediated using naturally occurring soil bacteria according to an extensive five-year experiment in Mestersvig, East Greenland, to which the University of Copenhagen has contributed.
Chinese researchers headed by Prof. CHEN Shengyun from the Northwest Institute of Eco-Environment and Resources (NIEER) and XUE Kai from University of Chinese Academy of Sciences have recently discovered links between reduction in microbial stability and soil carbon loss in the active layer of degraded alpine permafrost on the Qinghai-Tibet Plateau.
The old cousins of the common woodlice were crawling on Irish land as long as 360 million years ago, according to new analysis of a fossil found in Kilkenny, Ireland.
Dr. Igor Ivanishin, a postdoctoral researcher in the Harold Vance Department of Petroleum Engineering at Texas A&M University, has firsthand experience with the frustrations of oil production. He spent nine years as a hydraulic fracturing engineer with operating and service companies in Russia. A few years ago, he came to Texas A&M to get his doctoral degree while delving into a reoccurring recovery problem in carbonate reservoirs: why don't they produce oil as predicted?
Expose crayfish to antidepressants, and they become more outgoing -- but that might not be such a positive thing for these freshwater crustaceans, according to a new study.
A study of woodland ecosystems that provide habitat for rare, endangered species along streams, rivers throughout California reveals some ecologically important areas are inadvertently benefitting from water humans are diverting for their own needs. Though it seems a short-term boon to these ecosystems, the artificial supply creates an unintended dependence on its bounty, threatens the long-term survival of natural communities and spotlights the need for changes in the way water is managed across the state.
Pine Island Glacier's ice shelf lost about one-fifth of its total area between 2017 and 2020, in three dramatic collapses. Meanwhile the glacier sped up by 12%. The rest of the ice shelf, the authors say, could disappear much sooner than previous studies had suggested.
The type of material present under glaciers has a big impact on how fast they slide towards the ocean. Scientists face a challenging task to acquire data of this under-ice landscape. Choosing the wrong equations for the under-ice landscape can have the same effect on the predicted contribution to sea-level rise as a warming of several degrees, says Henning Åkesson, who led a new published study on Petermann Glacier in Greenland.
The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) and the Intergovernmental Panel on Climate Change (IPCC) launch a peer-reviewed report based on a 4-day virtual workshop on addressing the biodiversity and climate crises together involving 50 jointly-selected international experts.