Dragonflies are ancient: with damsel flies, they were among the earliest flying insects. An analysis based on molecular data and fossil evidence suggests a date of 480mya for the first insects, around the same time that land plants evolved, and includes a rather impressive family tree for the taxon; the earliest dragonfly fossils are around 325my […]
Continue readingDay: 17 January 2016
the wilyman thesis on how smallpox is transmitted
I had another head-desk moment today, on reading a bit more of Judy Wilyman's PhD thesis (a bit at a time is quite enough). The document has quite a bit to say about smallpox. I've already noted the ill-considered statement that the vaccine has never been subject to clinical trials – a statement unaccompanied by […]
Continue reading