Reference Terms
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Activated sludge
Activated sludge is a process in sewage treatment in which air or oxygen is forced into sewage liquor to develop a biological floc which reduces the organic content of the sewage.
Note: The above text is excerpted from the Wikipedia article "Activated sludge", which has been released under the GNU Free Documentation License.
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Earth & Climate News
December 20, 2024
Dec. 18, 2024 — California ground squirrels hunt, kill and eat voles, reveals a new study documenting evidence of widespread carnivorous behavior among ...
Dec. 16, 2024 — Analysis of the remains of at least 37 individuals from Early Bronze Age England finds they were killed, butchered, and probably consumed before being thrown down a 15m-deep shaft. It is the largest-scale example of interpersonal violence from ...
Dec. 11, 2024 — A new study shows that long-term exposure to air pollution contributes to millions of deaths in India. The research emphasizes the need for stricter air quality regulations in the ...
Dec. 12, 2024 — Colony surveys of common murres, an Alaskan seabird, show the full effects of the 2014-16 marine heat wave known as 'the blob.' Analysis of 13 colonies surveyed between 2008 and 2022 finds that ...
Latest Headlines
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Dec. 19, 2024 — A new tool that predicts the behavior of desert locust populations will help national agencies to manage huge swarms before they devastate food crops in Africa and ...
Dec. 20, 2024 — Researchers have developed a new material for sodium-ion batteries, sodium vanadium phosphate, that delivers higher voltage and greater energy ...
Dec. 20, 2024 — New research reveals that right whales can survive for more than 130 years -- almost twice as long as previously ...
Dec. 20, 2024 — A research team has revealed that to use the aquifer thermal energy storage (ATES) system safely over the long term it is crucial to investigate the groundwater quality before operating the system ...
Dec. 20, 2024 — Investigations into precipitation patterns in eastern Central Europe since the end of the last ice age have shown that dynamic processes in atmospheric circulation, such as the North Atlantic jet ...
Dec. 20, 2024 — Scientists have delivered the first measurements of Greenland Ice Sheet thickness change using data from ESA and NASA ice satellite missions. With ...
Dec. 20, 2024 — Artificial intelligence can provide critical insights into how complex mixtures of chemicals in rivers affect aquatic life -- paving the way for better environmental ...
Dec. 20, 2024 — We know a lot about how much fossil-derived carbon is emitted to the atmosphere but less about how much is stored in human-made products. Ecological ...
Dec. 20, 2024 — Despite their reputation as buzzing nuisances, flies serve a critical role as some of the Earth's most prolific pollinators -- and new research ...
Dec. 19, 2024 — Scientist have begun to reveal the particle-level processes that create the type of auroras that dance rapidly across the sky. The Kinetic-scale Energy and momentum Transport experiment -- KiNET-X -- ...