Showing 20 articles starting at article 1301

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Environmental Issues, Geoscience: Volcanoes

Return to the site home page

     (via sciencedaily.com)     Original source 

Analyses of U.S. national forests shows that increased protections for two Alaskan forests is a key to meeting climate and biodiversity goals.

     (via sciencedaily.com)     Original source 

Experts predict 'catastrophic ecosystem collapse' of UK forests within the next 50 years if action not taken. Other threats to UK forests include competition with society for water, viral diseases, and extreme weather affecting forest management.

     (via sciencedaily.com)     Original source 

Some bacteria are able to tap into unusual sources of nutrients in the surface water of the oceans. This enables them to increase their primary production and extract more carbon dioxide from the atmosphere. In doing so, however, they release the potent greenhouse gas methane.

     (via sciencedaily.com)     Original source 

The rapid adoption of zero-emission electric vehicles will move the nation close to an 80% or more drop in transportation greenhouse gas emissions by 2050 from the 2019 level according to researchers.

     (via sciencedaily.com)     Original source 

Twelve countries have the technical ability to sequester over 20% of their current total greenhouse gas emissions by converting crop residues to biochar. Bhutan leads the way with the potential to sequester 68% of its emissions in the form of biochar, followed by India, at 53%.

     (via sciencedaily.com)     Original source 

A new report has brought to light the challenge of air pollution levels in Africa and why international action is needed to combat it. 

     (via sciencedaily.com)     Original source 

AI analysis shows pollution levels, extreme weather events and increasing temperatures devastates biodiversity in freshwater lakes. 

     (via sciencedaily.com)     Original source 

Researchers are creating a database that harmonizes the recording of disturbances caused by insects and diseases in forests in 8 European countries by combining remote sensing, satellite images and field data.

     (via sciencedaily.com)     Original source 

Scientists have learned over the years that when aquatic organisms such as zooplankton become exposed to microplastics, they eat poorly. Research now shows that their plastic-induced eating difficulties also limit the ability of zooplankton to control algal proliferation. When algae bloom out of control, this presents a problem because some species produce toxins. Also, algal blooms can be associated with pea-soupy, unattractive bodies of water and contribute to hypoxia, a low-oxygen condition that may lead to fish kills. 

     (via sciencedaily.com)     Original source 

How can we ensure that an energy policy will achieve its objectives? To find out, scientists and public authorities can rely on computer models of varying degrees of accuracy. However, these models have a number of limitations, including the fact that they are not very effective for generating projections on a regional scale. A team has now designed a super-model to simulate the spread of three green technologies.

     (via sciencedaily.com)     Original source 

Sharks and rays from threatened species are being caught off northern Cyprus, according to a new study by scientists who are working with local authorities and fishers to protect the animals.

     (via sciencedaily.com)     Original source 

New calculations show that the European countries have great potential for reducing the demand for global food resources and the associated GHG footprint. Researchers have estimated the climate footprint savings that may be obtained from reducing food loss and waste along Europe's food supply chain by 50 % by 2030.

     (via sciencedaily.com)     Original source 

One of the largest studies to date finds the current generation of EV owners drive far fewer miles than owners of gas vehicles, translating to lower emissions savings from EVs.

     (via sciencedaily.com)     Original source 

Over the past few decades, algae have been slowly edging corals out of their native reefs across the globe by blocking sunlight, wearing the corals down physically, and producing harmful chemicals. But in recent years, a new type of algal threat has surfaced in tropical regions like the Caribbean -- one that spreads quickly and forms a crust on top of coral and sponges, suffocating the organisms underneath and preventing them from regrowing. Marine biologists report that peyssonnelioid alga crusts, or PACs, are expanding quickly across reefs worldwide, killing off corals and transforming entire ecosystems.

     (via sciencedaily.com)     Original source 

Researchers conducted a study to determine if replacing dietary fats from palm oil, soy and other agricultural crops with fats created synthetically in chemical or biological processes could help reduce climate change-causing greenhouse gases. The researchers' analysis finds a reduction in carbon emissions and other benefits, such the opening of agricultural lands to reforestation which benefits biodiversity and creates a carbon sink.

     (via sciencedaily.com)     Original source 

Up to now, the results of climate simulations have sometimes contradicted the analysis of climate traces from the past. Physicists and climatologists have now brought together experts in climate models and climate tracks to clarify how the discrepancies come about. The surprising result has now been published: in a way, both sides are right. Climate models correctly simulate global temperature trends, but often underestimate the strength of regional climate fluctuations, especially over the course of decades to centuries.

     (via sciencedaily.com)     Original source 

Researchers found that meeting greenhouse gas emissions goals for light-duty vehicles, which are passenger vehicles such as cars and trucks, is possible, but not just by increasing electric vehicle sales.  

     (via sciencedaily.com)     Original source 

Past cold periods such as the Little Ice Age were associated with reduced strength of North Atlantic currents and increased surface salinity in the Caribbean. This was accompanied by disturbances in the distribution of salt to the north leading to longer, stronger cooling phases in the northern hemisphere.

     (via sciencedaily.com)     Original source 

Global water resources are stretched by climate change and human population growth, and farms and cities are increasingly turning to groundwater to fill their needs. Unfortunately, the pumping of groundwater can cause the ground surface above to sink, as the aquifers below are drained and the architecture of the ground collapses. A new study maps this loss of groundwater storage capacity around the world.  

     (via sciencedaily.com)     Original source 

Using global satellite data, a research team has mapped the tree cover of the world's protected areas. The study shows that regions with abundant large herbivores in many settings have a more variable tree cover, which is expected to benefit biodiversity overall.