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ScienceDaily: Top Environment News |
Controversial insecticides shown to threaten survival of wild birds Posted: 12 Sep 2019 11:04 AM PDT New research shows how the world's most widely used insecticides could be partly responsible for dramatic declines in farmland bird populations. In the first experiment to track effects of a neonicotinoid pesticide on birds in the wild, the team found that white-crowned sparrows who consumed small doses of imidacloprid insecticide suffered weight loss and delays to their migration -- effects that could severely harm the birds' chances of surviving and reproducing. |
Why is Earth so biologically diverse? Mountains hold the answer Posted: 12 Sep 2019 11:04 AM PDT Life on Earth is amazingly diverse, and exhibits striking geographical global patterns in biodiversity. A pair of companion papers reveal that mountain regions -- especially those in the tropics -- are hotspots of extraordinary and baffling richness. Although mountain regions cover only 25% of Earth's land area, they are home to more than 85% of the world's species of amphibians, birds, and mammals, and many of these are found only in mountains. |
Simple model captures almost 100 years of measles dynamics in London Posted: 12 Sep 2019 11:04 AM PDT A simple epidemiological model accurately captures long-term measles transmission dynamics in London, including major perturbations triggered by historical events. |
How a carbon-fixing organelle forms via phase separation Posted: 12 Sep 2019 10:44 AM PDT Algae remove vast amounts of carbon dioxide from the atmosphere during photosynthesis thanks to an organelle called the pyrenoid, which boosts the efficiency of carbon-fixation. Researchers have known that the pyrenoid forms via a process of phase separation, the same process that causes oil to cluster into droplets in water. The new study looks deeper into how this happens. |
Elaborate Komodo dragon armor defends against other dragons Posted: 12 Sep 2019 10:43 AM PDT Just beneath their scales, Komodo dragons wear a suit of armor made of tiny bones. These bones cover the dragons from head to tail, creating a 'chain mail' that protects the giant predators. However, the armor raises a question: What does the world's largest lizard -- the dominant predator in its natural habitat -- need protection from? |
'Fire inversions' lock smoke in valleys Posted: 12 Sep 2019 10:43 AM PDT There's an atmospheric feedback loop, says an atmospheric scientist, that can lock smoke in valleys in much the same way that temperature inversions lock the smog and gunk in the Salt Lake Valley each winter. But understanding this loop can help scientists predict how smoke will impact air quality in valleys, hopefully helping both residents and firefighters alike. |
Researchers design a roadmap for hydrogen supply network Posted: 12 Sep 2019 09:48 AM PDT Researchers have developed a hydrogen supply chain model that can enable the adoption of zero-emission, hydrogen-powered cars -- transforming them from a novelty into everyday transportation in just 30 years. |
Satellite study of Amazon rainforest land cover gives insight into 2019 fires Posted: 12 Sep 2019 09:48 AM PDT A new study gives important context to the fires burning big swaths of the Amazon today. |
Conservation of a Central American region is critical for migrating birds Posted: 12 Sep 2019 09:16 AM PDT A new article identifies a previously overlooked area that is critical for conservation: the region between southern Mexico and Guatemala where songbirds fuel up for a grueling flight across the Gulf of Mexico. |
Why do birds migrate at night? Posted: 12 Sep 2019 09:05 AM PDT Researchers found migratory birds maximize how much light they get from their environment, so they can migrate even at night. |
The 'pathobiome' -- a new understanding of disease Posted: 12 Sep 2019 08:32 AM PDT Scientists have presented a novel concept describing the complex microbial interactions that lead to disease in plants, animals and humans. |
Diet impacts the sensitivity of gut microbiome to antibiotics, mouse study finds Posted: 12 Sep 2019 08:24 AM PDT Antibiotics change the kinds of bacteria in the mouse gut as well as the bacteria's metabolism -- but diet can exacerbate the changes, a new study showed. |
Four billion particles of microplastics discovered in major body of water Posted: 12 Sep 2019 08:18 AM PDT While collecting water samples and plankton, researchers discovered a high concentration of microplastics, which are known to disrupt the marine food chain. |
Microbes are degrading infrastructure, compounding health implications Posted: 12 Sep 2019 07:09 AM PDT Microorganisms growing inside aging buildings and infrastructure are more than just a health issue, according to new research. The research examined the impact of fungal mold growth and associated microbes within structures on a university campus. The study focuses on the observed biodeteriorative capabilities of indoor fungi upon gypsum board material (drywall) and how it affects a building's age and room functionality. |
Drinking tea improves brain health, study suggests Posted: 12 Sep 2019 07:09 AM PDT A recent study revealed that regular tea drinkers have better organized brain regions compared to non-tea drinkers. |
Sulphur emissions from marine algae dropped during glacial periods Posted: 12 Sep 2019 07:09 AM PDT Contrary to conventional wisdom, sulphur production by tiny marine algae decreased during glacial periods, and is more closely linked to climate than previously thought, according to latest research. A clearer understanding of the link between the climate and marine phytoplankton can help scientists incorporate these impacts in future climate models. |
Growing citrus disease bacteria in the lab Posted: 12 Sep 2019 06:47 AM PDT Being able to grow the elusive and poorly understood bacterium, Candidatus Liberibacter asiaticus (CLas), will make it easier for researchers to find treatments for the disease that has destroyed millions of acres of orange, grapefruit and lemon groves around the world and has devastated the citrus industry in Florida. |
Terahertz waves reveal hidden processes in ultrafast artificial photosynthesis Posted: 12 Sep 2019 06:47 AM PDT Researchers have succeeded in observing charge transfer and intermolecular interactions in ultrafast artificial photosynthesis. A new finding will help to develop highly efficient photocatalytic reactions, and TR-ATR terahertz spectroscopy will assist research on biological and chemical reaction processes. |
Mysterious Jurassic crocodile identified 250 years after fossil find Posted: 12 Sep 2019 06:47 AM PDT A prehistoric crocodile that lived around 180 million years ago has been identified -- almost 250 years after the discovery of it fossil remains. |
Finding (microbial) pillars of the bioenergy community Posted: 12 Sep 2019 05:00 AM PDT Scientists have focused on understanding more about the plant regions above the soil where these microbes can live, called the 'phyllosphere.' |
Microplastics stunt growth of worms Posted: 11 Sep 2019 04:33 PM PDT New research shows that the presence of microplastics can stunt the growth of earthworms, and even cause them to lose weight -- potentially having a serious impact on the soil ecosystem. |
A diabetes drug promotes brain repair -- but it only works in females Posted: 11 Sep 2019 11:28 AM PDT Study finds that the diabetes drug metformin, known to promote brain repair, can also help restore cognitive function in adult mice but only in females and in a way that is dependent on the sex hormone estradiol. |
Scientists solve lingering mystery of poorly understood frog Posted: 11 Sep 2019 11:28 AM PDT An international team of scientists has solved a centuries-old mystery of 'Fraser's Clawed Frog', an unusual and elusive species found in West Africa. |
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