To investigate the frontiers of particle physics, physicists and engineers are building detectors and making measurements in unusual settings from outer space to far-flung regions of the Earth. In the past several decades, laboratories have been set up deep underground in working mines or mountain tunnels to look at subatomic particles from our Sun and to search for the strange dark matter particles needed to explain the evolution of galaxies. This paper describes important current developments in astroparticle physics, the SNOLAB underground laboratory in Sudbury, Canada, and several of the experiments that are being developed in that facility.