Scientists have long debated how modern humans evolved. For decades, most researchers agreed that Homo sapiens came from one ancestral group in Africa, dating back 200,000 to 300,000 years. But new ...

A deeper understanding of how DNA changes over generations helps scientists learn why people differ and how diseases develop. Until recently, many fast-changing parts of the human genome remained ...

Find out what are the key reasons we need to broaden the sample size of the original map of human DNA created by the Human Genome Project. Clinical drug trials have historically had a much higher rate ...

DNA might be too small to see with the unaided eye, but it packs our cells in shocking quantities: More than six and a half feet of DNA lies within every cellular nucleus. It squeezes into such a ...

Ancient DNA has revealed that a common childhood herpesvirus was infecting—and even embedding itself into human genomes—thousands of years ago. The findings show a deep, shared evolutionary history ...