Homo sapiens arguably only exists as a truly unique species because of our coevolution with a wealth of externalized information; starting from languages held only in neuronal structures through many generations, to our tools and abstractions on pottery and cave walls, all the way to today’s online world.

Scientists working on the Human Genome Project and other DNA project have discovered an extra 223 genes in humans that do not appear in any other species on Earth. Another sign of life on Mars: NASA finds evidence of an ancient lake that may have bred microbial lifeforms. This book is pretty good, makes you question things you already know from school or what other people tell you about history, about humans, about Earth.Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH).

In fact, it quickly becomes clear that we evolved on a world distinctly different from the one we live on today.He also believes humans are not designed to be as exposed to the sun as they are on Earth, as they cannot sunbathe for more than a week or two – unlike a lizard – and cannot be exposed to the sun every day without problems. There's a trope in science fiction books and movies that says that humanity is not from Earth and are instead from another world or even another galaxy entirely.