
Students walk through the University of Texas at Austin campus. The campus has one of the most-diverse student bodies in the country. Texas has maintained some use of affirmative action. It also has implemented a “top 10 percent” plan granting automatic admission to top high school students based on class rank and, as a result, its enrollment of minorities has risen overall since the late 1990s. (Associated Press)

Students walk through the University of Texas at Austin campus. The campus has one of the most-diverse student bodies in the country. Texas has maintained some use of affirmative action. It also has implemented a "top 10 percent" plan granting automatic admission to top high school students based on class rank and, as a result, its enrollment of minorities has risen overall since the late 1990s. (Associated Press)

** FILE ** This Thursday, Sept. 20, 2012, photo shows buildings of The University of Texas MD Anderson Cancer Center in Houston. The nation's largest cancer center is launching a massive "moonshot" effort against eight specific forms of the disease, similar to the all-out push for space exploration 50 years ago. (AP Photo/Pat Sullivan)

** FILE ** This Thursday, Sept. 20, 2012, photo shows buildings of The University of Texas MD Anderson Cancer Center in Houston. The nation's largest cancer center is launching a massive "moonshot" effort against eight specific forms of the disease, similar to the all-out push for space exploration 50 years ago. (AP Photo/Pat Sullivan)

Andrew F. Oberle, a postgraduate student of anthropology and primate behavior at the University of Texas at San Antonio, has been observing these chimps at a primate sanctuary in South Africa. A vicious attack on him last week astonished conservationists who knew the chimps. (Associated Press)

Andrew F. Oberle, a postgraduate student of anthropology and primate behavior at the University of Texas at San Antonio, has been observing these chimps at a primate sanctuary in South Africa. A vicious attack on him last week astonished conservationists who knew the chimps. (Associated Press)

This illustration provided by Jorge R. Pinon, a former president of Amoco Oil Latin America who is now at the University of Texas at Austin, shows where different oil companies hold the rights to drill in various offshore blocks in Cuban waters in the Gulf of Mexico. An initial well drilled by Spanish oil giant Repsol came up dry, so the stakes for Cuba are high that oil be found soon.

This illustration provided by Jorge R. Pinon, a former president of Amoco Oil Latin America who is now at the University of Texas at Austin, shows where different oil companies hold the rights to drill in various offshore blocks in Cuban waters in the Gulf of Mexico. An initial well drilled by Spanish oil giant Repsol came up dry, so the stakes for Cuba are high that oil be found soon.

FILE - Actor Hal Holbrook greets patrons in stage make-up following his one man performance in "Mark Twain Tonight" at the University of Texas at Tyler, Texas, in this Jan. 13, 2007 file photo. The crowd sang happy 175th birthday to Mark Twain before the lights went down at the Clemens Center, Tuesday night Nov. 30, 2010 then laughed along with the nearest incarnation of the late author and humorist: Hal Holbrook. The 85-year-old actor once again put on his white suit and makeup and reminisced, wisecracked, smoked and scolded Tuesday night in the latest, and not the last, stage re-enactment of Twain's world famous speaking engagements from the turn of the 20th century. Twain died 100 years ago in April and is buried in Elmira, home to the family of his adored wife, Olivia. (AP Photo/Dr. Scott M. Lieberman, File)