We’re outnumbered by bacteria 1.3:1, we’re slightly more bacteria than we are human. We’re also stardust. We are also 60% water, and that water in our bodies is billions of years old; it’s been the clouds, the bottom of the sea, waves, streams and everything in the cycle. At an atomic level, 98% of the hydrogen in our bodies came from the bigbang. We’re incredibly ancient beings, perhaps we should see ourselves as aliens!