Even a small cloud can weigh as much as four tonnes – but gravity, chemistry and temperature keep them floating in the sky.
L’expertise universitaire, l’exigence journalistique
Articles sur Chemistry
Affichage de 181 à 200 de 348 articles
It is possible to split water into oxygen and hydrogen gas in zero gravity using sunlight, shows new study.
US firm HeatGenie is hoping to revive a technology that has surprising origins in World War II and beyond.
The world’s biggest diamond company is to sell synthetic gemstones for the first time.
Whether at a family gathering or in a research lab, getting access to images immediately was a game-changer. And Land’s innovations went far beyond the instant photo.
A chemist explains how some molecules in human breast milk help fight infection. Understanding their properties could lead to better infant formulas that share the health advantages of breastfeeding.
Water is one of very few chemicals that is found as a liquid, solid and gas at any time on Earth. These three states of water help explain why ice makes a cracking sound when water is poured over it.
That pre-sleep herbal tea may be doing many people a lot of good.
It’s all about the chemistry. Adding lemon can enhance the flavour and enjoyment of tea, and change its colour, but its best not to expect any extra boosts to your health.
Less-toxic hair dye would be a great invention. But discounting the risks that come with nanoparticles could undermine other efforts to protect human health and environmental from their effects.
Many socks, towels and other textiles are treated with silver nanoparticles to kill germs and odors. When the silver washes out, it can pollute waterways. Two chemists propose a way to collect it from wastewater.
Hundreds of people have been warned after former Russian spy Sergei Skripal was poisoned with Novichok nerve agent.
Through abstraction, the underlying essence of a mathematical concept can be extracted.
Pharmaceutical companies focus on small molecules they’ve devised – and can easily patent. But nature’s already come up with many antibacterial compounds that drug designers could use to make medicines.
Medicinal chemists are tweaking a natural molecule that can be a deadly poison – a modified version might work as a nonhormonal male contraceptive.
Dust can be instructive. The analysis of those collected around the comet 67P/Churyumov-Gerasimenko provided new information on the history of the solar system.
The four ingredients for holy incense are listed in the Old Testament, but there was much debate over the origin of one of them – onycha. Scientists think they’ve now confirmed the source.
Remembering J. M. Creeth, 70 years after he discovered hydrogen bonds in DNA.
‘Fast liquor’, aged in months rather than decades, is the holy grail for distillers who are trying techniques ranging from using special barrels to blasting their brew with ultrasound.
A British woman has been arrested for transporting the prescription painkiller into Egypt and could even face the death penalty.
Les contributeurs les plus fréquents
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Professor of Science Communication and Chemistry, University of Hull
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Senior Lecturer in Chemistry, University of Birmingham
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Senior Lecturer in Chemistry, University of Tasmania
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Associate Professor of Chemistry, University of Richmond
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Postdoctoral research associate, University of Oxford
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Associate Professor of Chemistry, University of Richmond
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Lead for Evidence-Based Medicine and Nutrition, Aston Medical School, Aston University
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Assistant Professor of Chemistry, Austin College
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Professor in Food Science and Human Nutrition, University of Canberra
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Associate professor, Monash University
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Professor, The University of Queensland
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CBRN defence scientist, Charles Darwin University
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Materials Chemist and Science Communicator, University of Sheffield
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Assistant Professor of Chemistry, Dartmouth College
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PhD Candidate, University of Nottingham
