Without oxygen: How primordial microbes breathed

A team of scientists have elucidated an ancient mechanism of cellular respiration. To that end, they studied bacteria that feed on the gases carbon dioxide and hydrogen, and turn them into acetic acid — a metabolic pathway that emerged very early in evolution. The international team has now been able to resolve the mystery of how the microbes use this process to generate energy. Their findings are also interesting for another reason: Since the microorganisms remove CO2 from their environment, they are seen as a beacon of hope in the fight against climate change. …read more