Like all electrics, fuel cells cars are also efficient.

FORBES: Why Hydrogen Cars Could Still Be The Future

While cloning stem cells is a technical breakthrough, there's already a method of deriving embryonic-like stem cells that doesn't require the use of embryos at all: induced pluripotent stem (IPS) cells, said Dr. George Daley, who is director of the Stem Cell Transplantation Program at Children's Hospital Boston and an international expert in stem cells.

CNN: Cloning stem cells: What does it mean?

Dr Jaisson suspects, though he has not yet proved for sure, that all the ants in the colony are genetically identical like the cells in a single human body.

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