NOVA: Do you think a theory that encompasses all four forces can be found ... wall as society decides that learning the fundamental laws of nature just isn't worth the money.

Of the four known fundamental forces of nature, the weak nuclear force is the one with the least obvious purpose. Gravity holds stars together and keeps us on the ground. The electromagnetic force ...

That at least is the case with the strong nuclear force, one of four fundamental forces of nature (the others being electromagnetism, gravity and the weak nuclear force). The strong force holds ...

“String theory was developed for people to understand the physics of the strong interaction. [...] People started from a very ...

And the reason could be evidence of a new, fifth force of nature. Currently, there are four known forces of nature: gravitational, electromagnetic, and the strong and weak nuclear forces.