To understand the body, “we might picture the heart as a pump, the brain as a kind of computer, the lungs as bellows, the kidney as filters”. But what about the immune system — asks immunologist John Trowsdale in his engaging analysis. It has no straightforward analogy, operating simultaneously as an antiviral software, a surveillance camera, a weapons system and a way to share resources. The system is “unobtrusive yet extensive, nowhere and everywhere, redundant yet essential, powerful yet remote”.
Wild Chocolate
Rowan Jacobsen Bloomsbury (2024)
When residue inside decorative pots from ancient Mexico was analysed, it yielded traces of cacao — early evidence of cocoa consumption. The Spanish word chocolate might have been influenced by the Nahuatl (Aztec) cacahuatl, or cacao water. Journalist Rowan Jacobsen’s appealing book explores wild chocolate’s history as he travels through Central and South America, meeting chocolate makers, activists and Indigenous leaders who revive the bean’s variety in taste and prestige, lost during its modern industrial manufacture.
Talking Images
Eds Silvia Ferrara et al. Routledge (2024)
The logo of the Beijing 2008 Paralympic Games was a figure with a red dot ‘head’, blue ‘body’ and single, straight green ‘leg’ — adapted from the Chinese character zhi, meaning ‘birth, life’, ‘arrival’ and ‘achievement’. It is one of a huge variety of “talking images” in a collection edited by three scholars interested in writing. Images range from Palaeolithic symbols and ancient Mesopotamian pictograms to modern Chinese calligraphy and Indian comics. The book traces links between images, marks, language and writing.
Do Plants Know Math?
Stéphane Douady et al. Princeton Univ. Press (2024)
Analysis of billions of pages of results from searches using the Bing algorithm suggests that reliable sites appear in search results 19 to 45 times more often than do sites with low-quality content.
Boomers Daily 