duke huffman and the other archaeologists are continuing their search europe has thousands more undated cave paintings. they history of our species homo sapiens is also not set in stone 2 years ago at the devil it could excavation site in morocco an international team of research has made a spectacular find fossilized bones of homo sapiens that were. 100000 years older then all previously known remains with a skull and teeth similar to those of modern humans this poses a major challenge to the widely accepted notion that homo sapiens rose in east africa 200000 years ago. the oldest probably bacteria they are thought to have colonized our planet 3770000000 years ago they can even live in parent ice and the cooling water of nuclear power plants and of course inside us past one micah wanted to know more. how important are the bacteria in our bodies. each one of us is home to trillions of invisible co-residents our body weight includes some 2 kilograms of microbes living both on our skin and insiders researchers call this bacterial zoo the micro biome. mouths alone contain around 600 differ