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Caffeine
Caffeine, sometimes called theine when found in tea, is a xanthine alkaloid found in the leaves and beans of the coffee tree, in tea, yerba mate, guarana berries, and in small quantities in cocoa, the kola nut and the Yaupon holly.
Note: The above text is excerpted from the Wikipedia article "Caffeine", which has been released under the GNU Free Documentation License.
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January 16, 2025
Jan. 15, 2025 — Scientists have identified fossils of snow leopards. The discovery has allowed them to trace the evolutionary history of the species during the Quaternary period and to propose how it dispersed from ...
Jan. 15, 2025 — New research has revealed that the nervous system circuitry that controls arm movement in octopuses is segmented, giving these extraordinary creatures precise control across all eight arms and ...
Jan. 13, 2025 — Scientists have succeeded in controlling the structure and function of biological membranes with the help of 'DNA origami'. The system they developed may facilitate the transportation of large therapeutic loads into cells. This opens up a new way ...
Jan. 10, 2025 — The way cricket frogs move across the surface of water has long been thought to resemble walking on water, but researchers have now discovered a different ...
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Jan. 15, 2025 — A new study shows distinct effects of neonicotinoid pesticide exposure in different bumble bee body parts, explaining why pesticides have diverse harmful effects and highlighting the need for more ...
Jan. 15, 2025 — Mosquitoes can survive prolonged droughts by drinking blood, which helps to explain why rates of mosquito-borne illness don't always decline in dry ...
Jan. 15, 2025 — Scientists have revealed the secret to the structural integrity of tiny particles that transport cargo from cell to cell through blood vessels and bodily fluids: special proteins that keep their ...
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Jan. 16, 2025 — Previous studies have posited that the mass extinction that wiped the dinosaurs off the face of the Earth was caused by the release of large volumes of sulfur from rocks within the Chicxulub impact ...
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