Around one million species are facing extinction, according to a report from IPBES, an independent intergovernmental science and policy body supported by the UN. It may be surprising to learn that even giraffes, parrots, and oak trees are included in the list of threatened species, as well as cacti and seaweed. Seaweed is one of the planet’s great survivors, and relatives of some modern-day seaweed can be traced back some ...