Research roundup: 6 cool stories we almost missed

It’s a regrettable reality that there is never enough time to cover all the interesting scientific stories we come across each month. So every month, we highlight a handful of the best stories that nearly slipped through the cracks. January’s list includes a lip-syncing robot; using brewer's yeast as scaffolding for lab-grown meat;  hunting for Leonardo da Vinci's DNA in his art; and new evidence that humans really did transport the stones to build Stonehenge from Wales and northern Scotland, rather than being transported by glaciers.