Fire and life
Fire and life The universe in which we live is 13.8 billion years in the making post big bang plasma coalescing into hydrogen and helium supernovea during the first hundred million years presaging more chemically complex stars and galaxies present by about ten billion years ago and the planets and moons asteroids and comets forming from the interstellar dust When the earth was young four billion years ago it was a place devoid of life methane and carbon dioxide accumulating in the atmosphere promoting a hotter planet but a place devoid of fire A billion years passed before life began before the evolution of metabolic processes capable of capturing energy and structural molecules from the harsh environment cyanobacteria transforming the planet into the fledgling world These unicellular organisms captured carbon dioxide incorporating it into their carboxylic acid cycles releasing fre...