The mysterious 'strange' gene in the human body
Scientists have discovered some non-genetic DNA from our ancestors, and this can change people's perception of evolution.Life on Earth may have started over 4 billion years ago
Life may have existed on Earth from 4.1 billion years ago, not just 3.8 billion years as previously estimated.Differences between viruses, bacteria and parasites
Although viruses, bacteria and parasites are capable of causing illness, the way they spread the disease to people is very different.