How do the tests for coronavirus work?
Across the world, countries are scrambling to increase their testing capacity for the virus — how are these tests carried out and how do they work? more
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29-Jun-2016
The summer holidays are here, which means there’ll soon be crowds flocking to the coast to spend the day at the beach. The supposed benefits of ‘fresh sea air’ are commonly extolled, but its origins might not be what you think: it’s the chemical compounds produced by algae and seaweed that contribute towards its characteristic smell.
Seaweed is one of the more obvious sources of malodorous compounds. It’s commonly seen washed up on the fringes of the sea, and as it decomposes, it can produce gases that contribute to the ‘sea smell’. The principle gas produced is hydrogen sulfide, which is generated via the bacterial breakdown of organic compounds in the seaweed. Hydrogen sulfide has an odour commonly described as akin to rotting eggs, and is actually a toxic gas in high concentrations.
How do the tests for coronavirus work?
Across the world, countries are scrambling to increase their testing capacity for the virus — how are these tests carried out and how do they work? more
Four ways to destroy coronavirus
How do you fight something you can’t see? That’s the question when it comes to the coronavirus crisis which currently has many of us holed up at home. Physical distancing is one important answer to preventing the spread of the virus, as avoiding catching it in the first place stops you from ... more
Coronavirus: How hand sanitisers protect against infections
As coronavirus continues its spread, panic-buying has swept supermarket shelves of hand sanitisers. What’s in these sanitisers and how effective are they in comparison to hand washing? This graphic takes a look. more
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