By altering the small animal's brain hormone chemistry, scientists have made a promiscuous meadow vole faithful - just like its prairie vole cousin. The researchers think this will lead to a greater understanding of how social behaviour is controlled in humans.
Scientists have shed light on Jewish history with an in-depth genetic study. The researchers analysed genetic samples from 14 Jewish communities across the world and compared them with those from 69 non-Jewish populations.
New evidence has been found for epic prehistoric voyages between the Americas and eastern Polynesia. DNA analysis suggests there was mixing between Native Americans and Polynesians around AD 1200.
Male adoptees are using consumer DNA tests to predict the surnames carried by their biological fathers, the BBC has learned. They are using the fact that men who share a surname sometimes have genetic likenesses too.
Scientists have used DNA to re-trace the migrations of a sea-faring civilisation which dominated the Mediterranean thousands of years ago. The Phoenicians were an enterprising maritime people from the territory of modern-day Lebanon.