Some Recent Progress in Classical General Relativity
  In this short survey paper, we discuss certain recent results in classical gravity. Our main attention is restricted to two topics: the positive mass conjecture and its extensions to the case with horizons, including the Penrose conjecture (Part I), and the interaction of gravity with other force fields and quantum-mechanical particles (Part II). 
Felix Finster, Joel Smoller, and Shing-Tung Yau