Bill Bryson - "A Short History Of Nearly Everything"

Cool book, lots of facts, but more something you should not read in one go: too many factoids and stories jumbling together. This is not a fault of mr Bryson in my opinion, it is simply an overload of data.

• oxygen: used by white bloodcells to kill bacteria
  
• stromatolites: "living rock", emerged 3.5 billion years ago, still in existence today
  
• slime molds: single cell organisms when conditions are good. Group together into a slug when impoverished. Can become a plant, with a stalk and a fruiting body, full of spores for the single cell organisms
  
• opabinia: 5 eyes and snout with claws