Universities in the United States are institutions of higher education that offer undergraduate and graduate degrees. They provide a wide range of programs in various fields, including science, arts, engineering, and business. Many universities are known for their research contributions and have facilities that support innovation and learning. There are two main types of universities: public and private. Public universities are funded by state governments and often have lower tuition rates for residents, while private universities rely on tuition and donations. Some of the most prestigious universities, such as Harvard University and Stanford University, are private institutions recognized for their academic excellence.