Humanity may split into two sub-species in 100,000 years? time as predicted by HG Wells, an expert has said.

Evolutionary theorist Oliver Curry of the London School of Economics expects a genetic upper class and a dim-witted underclass to emerge. The human race would peak in the year 3000, he said, before a decline due to dependence on technology.

People would become choosier about their sexual partners, causing humanity to divide into sub-species, he added. The descendants of the genetic upper class would be tall, slim, healthy, attractive, intelligent, and creative and a far cry from the ?underclass? humans who would have evolved into dim-witted, ugly, squat goblin-like creatures.

But in the nearer future, humans will evolve in 1,000 years into giants between 6ft and 7ft tall, he predicts, while life-spans will have extended to 120 years. Physical appearance, driven by indicators of health, youth and fertility, will improve, he says, while men will exhibit symmetrical facial features, look athletic, and have squarer jaws, deeper voices and bigger penises.

Women, on the other hand, will develop lighter, smooth, hairless skin, large clear eyes, pert breasts, glossy hair, and even features, he adds. Racial differences will be ironed out by interbreeding, producing a uniform race of coffee-coloured people. In 10,000 years time humans may have paid a genetic price for relying on technology. Spoiled by gadgets designed to meet their every need, they could come to resemble domesticated animals.

Social skills, such as communicating and interacting with others, could also be lost, along with emotions such as love, sympathy, trust and respect.