But theologians needn't lose too much sleep just yet. Despite decades of effort, progress has been slow. Rather than one or two rival theories whose merits can be judged against the evidence, there is a profusion of candidates and precious few clues as to which (if any) might turn out to be correct.
The seven front runners are: The string theory, Loop quantum gravity, CDT, Quantum Einstein gravity, Quantum graphity, Internal relativity and the E8.
Editor's note: Knowing the mind of God: Seven theories of everything in NewScientist.com is the source. Article has been originally written by Michael Marshall
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