Both the UK and US's research facilities in Antarctica are on the hunt for the next batch of workers to "go south".
Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
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2026-02-25 08:30彩电大王业绩暴雷，昔日家电巨头濒临退市螺旋实验室
The BBC visited the skating rink in Virginia where the ‘Quad God’ trains, as his closest friends and teammates expected to watch him win gold.
"The scale is what makes it so extraordinary," Neil Redfern from the Council for British Archaeology says comparing HS2 to other big development projects.