The discovery that early humans could have existed this far north this long ago was startling.

There are enough fossils showing distinctive features to rule out the possibility these are unusual or aberrant modern humans,

Though all these incidents are different, there is a startling similarity between them as all these birds died after humans tried to interfere with their natural habitat.

We've now got about 10 Neanderthal specimens of around 40-50,000 years old that have yielded DNA that is clearly distinct from anyone alive today.

DNA gets everywhere. So when we're dealing with a sample and you find it's got human DNA in it - is that DNA from the fossil, or is it actually DNA from the person who unearthed it?

We're playing so much better now than we were just two weeks ago.