List(s) of unsolved prob­lems in top­ics rang­ing from cog­ni­tive sci­ence to com­puter sci­ence; phi­los­o­phy to physics.

Got some time this com­ing week­end? Why not deci­pher an ancient writ­ing sys­tems or answer the P = NP prob­lem and earn your­self $1,000,000.