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Rebecca W. Keller, Ph.D., incorporated Gravitas Publications Inc in 2003 to develop and publish core sciences curriculum under the Real Science-4-Kids imprint. She has authored and published Real Science-4-Kids student texts, teacher manuals, and student laboratory workbooks in chemistry, biology and physics to serve kindergarten through ninth grade, available through mainstream and home ...
The Miller–Urey experiment was a synthesis of small organic molecules in a mixture of simple gases in a thermal gradient created by heating (right) and cooling (left) the mixture at the same time, with electrical discharges. The Miller–Urey experiment, [1] or Miller experiment, [2] was an experiment in chemical synthesis carried out in 1952 ...
Category. v. t. e. Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. [1][2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3] Cell biology is the study of the structural ...
One of the greatest questions of science centers on how life seemingly formed from lifeless molecules. ... Dutch researchers are trying to synthetically reconstruct the basic building blocks of ...
Astronomers using the Gaia space telescope have located two ancient streams of stars that helped the Milky Way galaxy grow and evolve more than 12 billion years ago.
An experiment reported in 2024 used a sapphire substrate with a web of thin cracks under a heat flow, similar to the environment of deep-ocean vents, as a mechanism to separate and concentrate prebiotically relevant building blocks from a dilute mixture, purifying their concentration by up to three orders of magnitude.
Carbon-based life. The Lewis structure of a carbon atom, showing its four valence electrons. Carbon is a primary component of all known life on Earth, and represents approximately 45–50% of all dry biomass. [1] Carbon compounds occur naturally in great abundance on Earth.
Science. The scientific method is an empirical method for acquiring knowledge that has been referred to while doing science since at least the 17th century. The scientific method involves careful observation coupled with rigorous scepticism, because cognitive assumptions can distort the interpretation of the observation.
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