Big tree-like cactuses known as saguaros in Arizona, USA
Susan E. Degginger / Alamy
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Cacti are one of many world’s most beguiling and simply recognised plant households, however how and why the spiky household developed into its many numerous sizes and shapes has been a thriller. Now, researchers are untangling the traditional historical past of the Cactaceae, revealing some shocking forces that formed these vegetation, and prompting concern for his or her future.
Fossils can’t inform us a lot about…
