Carnegie Mellon University began as the Carnegie Technical Schools, founded by Andrew Carnegie in 1900. In 1912, the school became the Carnegie Institute of Technology and began granting four-year degrees. In 1967, the Carnegie Institute of Technology merged with the Mellon Institute of Industrial Research to form Carnegie Mellon University. The university's 140-acre (57 ha) main campus is 3 miles (4.8 km) from Downtown Pittsburgh. Carnegie Mellon University (CMU) is a global research university with more than 13,200 students, 100,000 alumni and 5,000 faculty and staff. CMU has been a birthplace of innovation since its founding in 1900.