We suggest a new version of Darwin’s mechanism in string theory that connects evolutions of biological system to evolutions of cosmological systems. In this theory, the origin of both systems are closed strings which could shrink to stable zero-dimensional manifolds topologically. Then, these strings join to each other and form highly excited string balls which could shrink to non-stable zero-dimensional manifold. This system decays into open strings which each of them couple to a one-dimensional manifold and by joining all manifolds, an N-dimensional manifold is emerged. Then, this manifold decays to a 4-dimensional universe and a N-4-dimensional manifold which wind around this universe. Next, some closed strings decay into two groups of open strings which one group produces hexagonal and pentagonal manifolds in universe and another creates the same manifolds with opposite quantum charges in extra dimensions. Summing over charges of two groups of open strings should be equal to the charge of closed strings. By joining these manifolds, two types of biological objects are emerged which one is known as DNA in our universe and another is called dark DNA (anti-DNA) in extra dimensions. Quantum charges of atoms, bases and elements of dark DNAs in extra dimensions have opposite signs respect to quantum charges of atoms, bases and elements of DNAs in universe. On the other hand, some other closed strings decay into two groups of open strings and these strings produce two types of DNAs with opposite quantum charges which one type create the life on the planets and another produces a black stringy DNA with high temperature interior the core of planet. Thus, life on the earth can be controlled by the evolutions of strings in extra dimensions and strings interior of the earth’s core.