In molecular communication, information is conveyed through chemical messages. With significant advances in the fields of nanotechnology, bioengineering, and synthetic biology over the past decade, microscale and nanoscale devices are becoming a reality. Yet the problem of engineering a reliable communication system between tiny devices is still an open problem. At the same time, despite the prevalence of radio communication, there are still areas where traditional electromagnetic waves find it inefficient or expensive to reach. Points of interest in industry, cities, medicine, and military applications often lie in embedded and entrenched areas, accessible only by ventricles at scales too small for conventional wave based communications, or they are structured in such a way that directional high frequency systems are ineffective. Molecular communication is a biologically inspired communication scheme that could be employed for solving these problems. Although biologists have studied molecular communication, it is poorly understood from a telecommunication perspective. In this paper, we highlight the recent advancements in the field of molecular communication engineering.