An article on the conservative/right-wing WorldNetDaily website explains the thesis of Thomas Horn's book, Nephilim Stargates: The Year 2012 and the Return of the Watchers (Anomalos Publishing, 2007), which readers can buy at the WorldNetDaily online book store. According to the article, "Are Bibles 'giants' set for return? Author warns genetic engineering could bring back 'Nephilim'" (September 19, 2008), "New experiments in genetic engineering could open the doors for the return of fearsome 'giants' described in the Bible – the offspring of human women and fallen angels." The article quotes the author as asking,

What if, by corrupting the species barrier in which each creature was to recreate after its "own kind," Watchers (or demons) had successfully mingled human-animal DNA, creating something new, a construct that God had not made, manipulating genetic material and crossing the species barrier, which God had forbade, resulting in a body they could incarnate within?

The article continues,

"Horn hypothesizes that, through genetic engineering, they created blended beings, not entirely human or animal – creatures that neither humans nor animal spirits would indwell, for they were neither man nor beast. This provided bodies into which they could extend themselves, just as is described in numerous ancient texts. 'The results of this genetic modification were the giants known as Nephilim,' he says."

The article points out the connection between "transhumanism"/"posthumanism" and a coming rebirth of the Biblical 'Giants':

Not everybody shares these concerns. A radical, international, intellectual, and cultural movement known as "Transhumanism" supports the use of new sciences including genetic modification to enhance human mental and physical abilities and aptitudes so that "human beings will eventually be transformed into beings with such greatly expanded abilities as to merit the label 'posthuman.'"

The article ends with these words:

"But imagine the staggering implications of such science if dead Nephilim tissue was discovered with intact DNA and a government or rogue agency somewhere was willing to clone or mingle the extracted organisms to make Homo-nephilim," says Horn. "If one accepts the biblical story of giants as real, such discovery could actually be made someday, or perhaps already has been and was covered up. The technology to resurrect the extinct species may already exist, and cloning methods are being studied now for use with bringing back Tasmanian Tigers, Wooly Mammoths and other extinct creatures."

Is the world on the verge of bringing back demonic giants?

Horn believes so.

Anomalos Publishing appears to be a vanity press specializing in apocalyptic literature in many genres. UPDATE: Scientists say that regenerating a wooly mammoth may indeed be possible.