0.6 billion
The first fungi start to break down rock into soil
0.5 billion
The Cambrian explosion - the number of animal species rises tremendously
0.4 billion
Terrestrial ferns spread, forming huge forests
0.3 billion
The Pangaea supercontinent forms
0.2 billion
The first dinosaurs (and flowers) originate
0.1 billion
The continents find their existing arrangement
After 12 hours in the air, you step out of the plane into broad daylight. You are usually active and energetic at this new time of day at your new location, but if you hadn’t flown, you would be fast asleep in your own bed at this time, and now you just feel thick-headed. During the next couple of days, you experience sleeplessness, poor appetite and mood swings, all because the flight across several time zones has confused your internal clock.
This is how you deeply you can be affected by a confused internal clock, so that the disorientation of jet-lag is perhaps one thing we haven’t missed during the flight cancellations of Covid.
