The ancient Nazca people of Peru are famous for the lines they drew in the desert depicting strange animal forms.
A further mystery is what happened to this once great civilisation, which suddenly vanished 1,500 years ago.
Now a team of archaeologists have found the demise of the Nazca society was linked in part to the fate of a tree.
Analysing plant remains they reveal how the destruction of forests containing the huarango tree crossed a tipping point, causing ecological collapse.
read moreHollow and Nonexistent
Did you ever imagine that men who created, fought and died for, and built America would one day comprise a special-interest group (SIG)? Stop imagining. That day is today.
Judging by how they view themselves, and, consequently, how women view them, men are neither special nor of much interest to America. Accordingly, this so-called "group" is, in reality, hollow and nonexistent and, therefore, trivial.
An impassioned debate is underway in Switzerland ahead of a referendum at the end of November. If passed, it would impose a constitutional ban on the building of minarets across the country.
read moreAn impassioned debate is underway in Switzerland ahead of a referendum at the end of November. If passed, it would impose a constitutional ban on the building of minarets across the country.
read moreHAVANA Fidel Castro has found something to sneeze at in Washington's decision to ease visits by Cuban-Americans to his island: He says more Americans mean more swine flu.
I hope that historians look back and conclude that November 3, 2009 was the day Obamacare (and Cap and Tax, and Card Check) died.
What a great night!
If Blue Dogs want to remain in office, I would suggest to them that they think long and hard before voting for Obamacare, crap and tax and card check.