A pre-Viking woolen tunic found beside a thawing glacier in south Norway shows how global warming is proving something of a boon for archaeology. The greenish-brown, loose-fitting outer clothing – suitable for a person up to about 5 feet 9 inches tall – was found 6,560 feet above sea level on what may have been a Roman-era trade route in south Norway.  Carbon dating showed it was made around 300 AD.