Also about Fire

Fun fact to know and share: Fire on earth is roughly only 500 million years old, dating back to the point in Earth's development when there was enough oxygen in the atmosphere to sustain the reaction. Now, no doubt there was fire on Earth before this period, but it would have been quickly snuffed out. Only when the oxygen content hit a certain percentage - and this was based entirely on the amount of plant material on Earth (as, most of the oxygen on earth comes from plants)  - could fire burn freely. This is all established in the fossil record, as prior to 500 million years ago, there is no evidence of charcoal.

Which makes me think there must have been some magic moment, a tipping point, when the first fire caught and then spread, and fire was truly born on earth. Let's pretend that happened 500 million years ago today.


No comments: