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ScienceDaily: Earth & Climate News |
NASA, FEMA, international partners plan asteroid impact exercise Posted: 24 Apr 2019 06:08 PM PDT NASA and other U.S. agencies and space science institutions, along with international partners, will participate in a 'tabletop exercise' that will play out a realistic -- but fictional -- scenario for an asteroid on an impact trajectory with Earth. |
Early melting of winter snowfall advances the Arctic springtime Posted: 24 Apr 2019 05:25 PM PDT Early melting of winter snow is driving the early arrival of spring in parts of the Arctic. |
Freshwater fish species richness has increased in Ohio River Basin since '60s Posted: 24 Apr 2019 02:26 PM PDT The taxonomic and trophic composition of freshwater fishes in the Ohio River Basin has changed significantly in recent decades, possibly due to environmental modifications related to land use and hydrology, according to a new study. |
Air pollution poses risks for childhood cancer survivors Posted: 24 Apr 2019 12:36 PM PDT A new study finds that air pollution significantly increases the risk of hospitalizations for young cancer survivors. |
Cleaner, cheaper ammonia: Cheaper fertilizer Posted: 24 Apr 2019 12:36 PM PDT Ammonia -- a colorless gas essential for things like fertilizer -- can be made by a new process which is far cleaner, easier and cheaper than the current leading method. Researchers use readily available lab equipment, recyclable chemicals and a minimum of energy to produce ammonia. Their Samarium-Water Ammonia Production (SWAP) process promises to scale down ammonia production and improve access to ammonia fertilizer to farmers everywhere. |
Immense Pacific coral reef survey shows green sea turtle populations increasing Posted: 24 Apr 2019 12:36 PM PDT Densities of endangered green turtles are increasing in Pacific coral reefs, according to the first comprehensive in-water survey of turtle populations in the Pacific. |
Global warming hits sea creatures hardest Posted: 24 Apr 2019 12:36 PM PDT Global warming has caused twice as many ocean-dwelling species as land-dwelling species to disappear from their habitats, a unique study found. The greater vulnerability of sea creatures may significantly impact human communities that rely on fish and shellfish for food and economic activity, according to the study. |
Minerals in mountain rivers tell the story of landslide activity upstream Posted: 24 Apr 2019 12:35 PM PDT Scientists have come up with a new way of analyzing sand in mountain rivers to determine the activity of landslides upstream, which has important implications for understanding natural hazards in mountainous regions. |
Particulate matter takes away 125,000 years of healthy life from Europe's child population Posted: 24 Apr 2019 12:35 PM PDT A study analyzes the burden of disease of seven environmental hazards to children in the 28 countries of the European Union. |
Major deep carbon sink linked to microbes found near volcano chains Posted: 24 Apr 2019 12:35 PM PDT Up to about 19% more carbon dioxide than previously believed is removed naturally and stored underground between coastal trenches and inland chains of volcanoes, keeping the greenhouse gas from entering the atmosphere, according to a new study. |
Eclogitic diamonds formed from oceanic crust Posted: 24 Apr 2019 12:34 PM PDT Eclogitic diamonds formed in Earth's mantle originate from oceanic crust, rather than marine sediments as commonly thought, according to a new study. |
Geography study finds hot days lead to wildfires Posted: 24 Apr 2019 09:52 AM PDT Geography researchers found that temperature was a better predictor of wildfire than humidity, rainfall, moisture content of the vegetation and soil and other weather factors. |
Salish seafloor mapping identifies earthquake and tsunami risks Posted: 24 Apr 2019 09:51 AM PDT The central Salish Sea of the Pacific Northwest is bounded by two active fault zones that could trigger rockfalls and slumps of sediment that might lead to tsunamis. |
Reinforced concrete wall damage may be larger than expected in major Seattle earthquake Posted: 24 Apr 2019 09:51 AM PDT Using ground motions generated for a range of simulated magnitude 9 earthquakes in the Pacific Northwest, researchers are testing how well reinforced concrete walls might stand up under such seismic events. |
Changes in rainfall and temperatures have already impacted water quality Posted: 24 Apr 2019 09:51 AM PDT Changes in temperature and precipitation have already impacted the amount of nitrogen introduced into US waterways. This can lead to toxin-producing algal blooms or low-oxygen dead zones called hypoxia. |
Vast diversity of ocean microbes revealed Posted: 24 Apr 2019 09:50 AM PDT Advanced molecular techniques have revealed the diversity of a little-understood group of ocean microbes called protists, according to a new publication. The project analyzed samples collected by the global Tara Oceans expedition, documenting genomes that will help researchers identify protists throughout the ocean. |
43-year-old mystery of Polynya in Antarctica unraveled Posted: 24 Apr 2019 07:22 AM PDT A new study has unraveled the four decade long mystery surrounding the occurrence of a mid-sea Polynya -- a body of unfrozen ocean that appeared within a thick body of ice during Antarctica's winter almost two years ago. |
Antarctica: The final frontier for marine biological invasions? Posted: 24 Apr 2019 07:22 AM PDT A new study looking at the implications of increased shipping activity and the impact on Antarctic marine biodiversity. The research is an important step in the quest to understand whether invasive species, introduced by shipping, will find the Antarctic marine environment more hospitable as Antarctica's climate changes. |
Energy-saving new LED phosphor Posted: 24 Apr 2019 07:22 AM PDT The human eye is particularly sensitive to green, but less sensitive to blue and red. Chemists have now developed a new red phosphor whose light is well perceived by the eye. This increases the light yield of white LEDs by around one-sixth, which can significantly improve the energy efficiency of lighting systems. |
Can we solve the riddle of the coral reef halos? Posted: 24 Apr 2019 05:34 AM PDT Patches of coral reef are often surrounded by very large 'halos' of bare sand that are hundreds to thousands of square meters. New research sheds light on these enigmatic features that are visible from space. |
Getting fertilizer in the right place at the right rate Posted: 24 Apr 2019 05:34 AM PDT In-soil placement of phosphorus can decrease phosphorus loss in snowmelt runoff |
Field trial with neonicotinoids: Honeybees are much more robust than bumblebees Posted: 23 Apr 2019 10:36 AM PDT The insecticide clothianidin affects different species of bees in different ways. While it has no demonstrably negative effect on honeybees, it disrupts the growth of bumblebees and threatens the survival of entire colonies. However, the insecticide does not make either species more susceptible to diseases and pathogens, as a massive field study in Sweden shows. |
Gulf of Maine seasonal wildlife timing shifts Posted: 23 Apr 2019 10:34 AM PDT Many researchers and amateur naturalists track dates for the first robin or pond ice-out; such records offer data on timing of plant and animal life cycle events known as phenology. While such observations are common in terrestrial systems, a new report shows limited understanding of similar marine events. The authors urge researchers to increase observations and use more phenological datasets to understand how marine species respond to climate change through phenological shifts in the Gulf of Maine and coastal regions. |
New studies highlight challenge of meeting Paris Agreement climate goals Posted: 23 Apr 2019 08:40 AM PDT New research highlights the 'incredible challenge' of reaching the Paris Agreement without intense action and details the extreme temperatures parts of the planet will suffer if countries fail to reduce emissions. |
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