NEW YORK (AP) — Industrialist David H. Koch (kohk) and financier Henry R. Kravis have made separate donations totaling $250 million for hospitals and medical research in New York City. The Wall Street Journal reports that Koch has given $150 million to Memorial Sloan Kettering Cancer Center. His donation will help build a $1.3 billion, 23-story outpatient cancer center in Manhattan. It's expected to serve about 1,300 patients daily. Koch has been a member of Memorial Sloan Kettering's board of overseers and managers since 1990. The Kravis foundation is giving $100 million to Rockefeller University. It's building a laboratory research facility that will span three city blocks. Kravis and his wife, Marie-Josee Kravis, say their gift will enable scientists to "push the boundaries of biomedical knowledge."