LifeMicrobe with the smallest genome yet pushes the boundaries of life Symbiotic bacteria living inside insect cells have lost much of their DNA over hundreds of millions of years, much like the ancient microbes that evolved into mitochondria News
LifeOur earliest vertebrate ancestors may have had four eyes Extraordinary fossils of 518-million-year-old jawless fish, among the earliest known vertebrates, appear to show that these animals had two pairs of eyes News