Otzi, Italy's prehistoric iceman who roamed the Alps some 5,300 years ago. Photo: Reuters
As cold cases go, it does not get much colder than Otzi the Iceman, whose body was found frozen solid in the Italian Alps 5300 years after he died from an arrow wound.
Since he was discovered by trekkers in 1991, scientists have mapped his DNA and figured out everything from what ailments he suffered to the last meal he ate.
Now, using advanced nanotechnology, they have located traces of Otzi's blood, the oldest sample ever retrieved. The discovery sheds new light on the understanding of blood-ageing and may change the way police study blood found at modern crime scenes.






Massive demonstrations of support for the Revolution and commitment to socialism took place on May Day in all of Cuba’s 15 provinces. Workers and the entire people carrying banners and posters filled Plazas and avenues across the country. 
