Recently, physicists have started a new program called Swampland to overcome the criticism of string theory that arose in the 2000s. Van Riet says, "The ultimate hope is that the Swampland program ...

String theory suggests that the most fundamental building blocks of the universe are not particles like electrons or quarks, but tiny, vibrating strings of energy. It is the vibration and ...

String theory is perhaps the most high-profile candidate for what physicists call a theory of everything – a single mathematical framework capable of describing the entirety of the known universe.