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Reference Terms
from Wikipedia, the free encyclopedia

Antihistamine

An antihistamine is a drug which serves to reduce or eliminate effects mediated by histamine, an endogenous chemical mediator released during allergic reactions, through action at the histamine receptor.

Note:The above text is excerpted from the Wikipedia article "Antihistamine", which has been released under theGNU Free Documentation License.
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Science News
July 28, 2023

Listen to a Star 'Twinkle'

Many people know that stars appear to twinkle because our atmosphere bends starlight as it travels to Earth. But stars also have an innate 'twinkle' -- caused by rippling waves of gas on their surfaces -- that is imperceptible to current Earth-bound telescopes. In a new study, researchers developed ...

基因组分析,46000岁高龄的蛔虫Siberian Permafrost Reveals Novel Species

Some organisms, such as tardigrades, rotifers, and nematodes, can survive harsh conditions by entering a dormant state known as 'cryptobiosis.' In 2018, researchers found two roundworms (nematode) species in the Siberian Permafrost. Radiocarbon ...

Gloomy Climate Calculation: Scientists Predict a Collapse of the Atlantic Ocean Current to Happen Mid-Century

Important ocean currents that redistribute heat, cold and precipitation between the tropics and the northernmost parts of the Atlantic region will shut down around the year 2060 if current greenhouse gas emissions persist. This is the conclusion ...

Greenland Melted Recently: High Risk of Sea Level Rise Today

A large portion of Greenland was an ice-free tundra landscape -- perhaps covered by trees and roaming woolly mammoths -- in the recent geologic past (about 416,000 years ago), a new study shows. The results help overturn a previous view that much of the Greenland ice sheet persisted for most of the ...
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