Blue-green algae source sugar from the oceans

English: Stromatolites growing in Hamelin Pool...
Stromatolites – ancient cyanobacteria – in Shark Bay, Western Australia. (Photo credit: Wikipedia)

Cyanobacteria – commonly referred to by the misnomer ‘blue-green algae’ – are photoautotrophs, which is to say that they have the nifty ability to make their own food from sunlight. In fact, their predecessors were probably some of the first organisms on Earth to master this feat.

The ability to use light energy from the sun to power reactions that turn carbon dioxide and water into sugars (a process known as photosynthesis) assured these tiny organisms a permanent role on the evolutionary stage. At 3.5 billion years old, stromatolites – the clumpy, fossilised remains of ancient cyanobacteria – are some of the oldest records of life that we have.

Continue reading “Blue-green algae source sugar from the oceans”