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ScienceDaily: Earth & Climate 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. |
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. |
'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. |
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. |
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. |
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. |
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