to improve their energy efficiency. MIT has also taken steps to reduce its environmental impact by running alternative fuel campus shuttles, subsidizing public transportation passes, constructing solar power offsets, and building a cogeneration plant to power campus electricity, heating, and cooling requirements.
=== Research facilities ===
MIT's on-campus nuclear reactor is one of the most powerful university-based nuclear reactors in the United States. The prominence of the reactor's containment building in a densely populated area has been controversial, but MIT maintains that it is well-secured.
MIT Nano, also known as Building 12, is an interdisciplinary facility for nanoscale research. Its 100,000 sq ft (9,300 m2) cleanroom and research space, visible through expansive glass facades, is the largest research facility of its kind in the nation. With a cost of US$400 million, it is also one of the costliest buildings on campus. The facility also provides state-of-the-art nanoimaging capabilities with vibration …
