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(3.25) This is just the sort of wide-ranging popular science book that draws me in. Like Entangled Life by Merlin Sheldrake, a work I’ve had many opportunities to recommend even to those who don’t normally pick up nonfiction, it incorporates many weird and wonderful facts about life forms we tend to overlook. Wedlich, a freelance science journalist in Germany, starts off at the Hunterian Museum in Glasgow, where she seeks a sample of the “primordial slime�� collected by the HMS Challenger in 1876. “It seems to be an unwritten rule of horror: slime sells!�� she remarks �� from H.P. Lovecraft to Ghostbusters, it has provoked disgust. Jellyfish, snails, frogs and carnivorous plants �� you’re in for a sticky tour of the natural world.

The technical blanket term for slimy substances is “hydrogels,�� which are 99% water and held together by polymers. Biological examples have been inspiring new technologies, like friction reducers (e.g. in fire hoses) modelled on fish mucus, novel adhesives to repair organs and seal wounds, and glue traps to remove microplastics. Looking to nature to aid our lives is nothing new, of course: Wedlich records that slugs were once used to lubricate cart wheels.

The book branches off in a lot of directions. You’ll hear about writers who were spellbound or terrified by marine life (Patricia Highsmith kept snails, while Jean-Paul Sartre was freaked out by sea creatures), the Victorian fascination with underwater life, the importance of the microbiome and the serious medical consequences of its dysfunction, and animals such as amphibians that live between land and water. At times it felt like the narrative jumped from one topic to another, especially between the biological and the cultural, without following a particular plan, but there are enough remarkable nuggets to hold the interest.

Originally published on my blog, .