Measurements of the cosmic microwave background (CMB) are a powerful probe of the origin, contents, and evolution of our Universe. CMB observations have shown our universe to be spatially flat, constrained inflation and other theories of the primordial universe, and provided a cornerstone for our precision knowledge of the Lambda-CDM cosmological model. The current generation of ground-based experiments, including Advanced ACTPol, have produced many leading CMB measurements and are contributing to our understandings of tensions including that in measurements of the Hubble constant. Soon we will enter an era where ground-based measurements will provide the tightest constraints on many cosmological parameters. These constraints will rapidly improve over the coming decade as we complete the analysis of the Advanced ACTPol data and as Simons Observatory and then CMB-S4 come online. These measurements will provide new insights into the early universe, dark energy, dark matter, neutrino masses, a variety of astrophysical phenomena; and enable searches for potential surprises. In this talk I present recent results from the Advanced ACTPol experiment and overviews of the next two generations of CMB experiments: Simons Observatory and CMB-S4.