Life has been here on Earth almost immediately after it was formed. That is, shortly after the soil was cooled and the water had come in the seas. Life has had a decisive influence on how our Earth appears today. Everything we see around us is influenced by life.
How old is life here on Earth? How do we know that old-fashioned signs of life are really traces of life? How do we know how old these tracks are? How have the conditions been for the formation of life 3.5 to 4 billion years ago here on Earth? And, how has life since shaped our planet?
Minik Rosing is a Greenlandic geologist, Head of the Geological Museum and Professor of Geology at the University of Copenhagen. Educated in Denmark and the USA he has participated in the geological exploration of Greenland. Rosing has proved chemical traces of life with the tracks that are 3.8 billion years old.