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Nitrate pollution in rivers linked to dry climates, not just human activity
المصدر: Phys.org - latest science and technology news stories · نُشر
Nitrate, a chemical compound of oxygen and nitrogen often used in farm fertilizers, can rise to toxic levels in surrounding water under very dry conditions. This relationship has traditionally been attributed to agricultural runoff or human waste in the environment, but new resea
Nitrate, a chemical compound of oxygen and nitrogen often used in farm fertilizers, can rise to toxic levels in surrounding water under very dry conditions. This relationship has traditionally been attributed to agricultural runoff or human waste in the environment, but new research led by scientists at Penn State shows that a hot and dry climate elevates concentrations of nitrate in rivers and streams, even in areas without urban or agricultural development.
أخبار ذات صلة
How human ideas evolve: Technical progress may not require weeding out weaker designs
Human culture evolves similarly to living organisms, but unlike biology, human creativity can accumulate improvements at an incredible speed. But how exactly does the process of transmitting and modifying ideas between people work?
Phys.org - latest science and technology news stories ·
Pumpkin seed protein puts a twist on nondairy coffee creamer
Pumpkin season is about more than cute décor. The squash contains lots of seeds with a high protein content, but they're usually discarded. Researchers reporting in ACS' Journal of Agricultural and Food Chemistry found another way to use the seeds, extracting that protein to crea
Phys.org - latest science and technology news stories ·
Where are all the males? Ancient human fossils reveal a startling mystery
A remarkable discovery in a South African cave suggests that an extinct human relative may have created an all-female burial site more than 240,000 years ago. Scientists analyzed ancient proteins preserved in Homo naledi teeth and found no male-specific markers among at least 20
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Human bodies produce 2 billion metric tons of CO2 a year just by staying alive
Humans collectively produce more than 2 billion tonnes of carbon dioxide annually just by turning food into energy, a 74% increase over three decades largely driven by population growth. Unlike fossil fuel emissions, however, the CO2 we exhale is part of the natural carbon cycle,
All Top News -- ScienceDaily ·
Secret to selling small plates at restaurants: Nonrounded pricing
Oh, what a difference a penny can make in the likelihood that restaurant customers will order a small plate.
Phys.org - latest science and technology news stories ·