Changes

==Pending research==

==Pending research==

Today some physicists are working on a [[quantum theory of gravity]] (the "theory of everything"), such as [[string theory]] and [[loop quantum gravity]].  Critics increasingly point out that [[string theory]] and [[loop quantum gravity]] are largely untestable and unfalsifiable, and thus potentially unscientific under the principles of science advanced by [[Karl Popper]].

Today some physicists are working on reconciling general relativity with [[quantum mechanics]], and determining how gravity fits with the three subatomic forces of nature (the "theory of everything"). Two of the more commonly studied attempts at this reconciliation are [[string theory]] and [[loop quantum gravity]].  Critics increasingly point out that [[string theory]] and [[loop quantum gravity]] are largely untestable and unfalsifiable, and thus potentially unscientific under the principles of science advanced by [[Karl Popper]].<ref>See, for example, ''Not Even Wrong'', by Peter Woit</ref>.

==Government Support for Relativistic research==

==Government Support for Relativistic research==