The fossil calciferous skeletons of single-celled foraminifers are a beautiful history book with information on CO2-levels in the oceans of the distant past.
Earth Sciences
Nov 27, 2023
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47
AMOLF researchers have used the special properties of perovskite semiconductors to develop a simple spray test to demonstrate the presence of lead. Perovskite is a material suitable for use in LEDs and solar cells, for example. ...
Analytical Chemistry
Nov 27, 2023
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61
Farmers add calcium to their soil for many reasons related to increasing crop yields—including regulating pH and improving soil structure.
Ecology
Nov 20, 2023
1
97
Vaterite is one of the three forms of calcium carbonate, along with calcite and aragonite. Nanosized vaterite is valuable for various applications, such as drug delivery, cosmetics, and bone defect filling, owing to its biocompatibility, ...
Bio & Medicine
Nov 7, 2023
0
15
Four threatened and endangered plant species growing in the San Bernardino National Forest will have an opportunity to thrive following the adoption of a plan by the U.S. Bureau of Land Management and U.S. Forest Service ...
Plants & Animals
Oct 23, 2023
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40
Foraminifera are tiny, single-celled organisms that live in the oceans. Their hard shells, made of calcium carbonate, can withstand the test of time and their fossils reveal a lot about Earth's history, including past climates ...
Evolution
Sep 19, 2023
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5
Atherosclerosis is characterized by the hardening of blood vessels, especially certain arteries, due to the local buildup of fibers and lipids (mainly cholesterol) in the inner wall of an artery, causing it to narrow. It ...
Bio & Medicine
Sep 14, 2023
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15
Global warming is not solely a modern-day occurrence but has been a prominent feature of Earth's geological history for millennia. One such event occurred approximately 40 million years ago, lasting ~400,000 years, known ...
Japan's Aerospace Exploration Agency sent the Hayabusa2 spacecraft to 162173 Ryugu in 2019, an asteroid in orbit near Earth that is comprised of rocky fragments originating from a larger parent body. Multiple rovers brought ...
When you use a membrane for water treatment, junk builds up on the membrane surface—a process called fouling—which makes the treatment less efficient. In a new study, published in the Journal of Membrane Science, researchers ...
Materials Science
Aug 7, 2023
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1
Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but high consumption can be hazardous.
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