Fifty members of the globe-trotting group will make the Emerald Isle the 19th country it has visited since 1988.

Lara Kerr survived a scary childhood accident that led to even more work on her teeth as an adult.

Award recognizes their contributions and service to science and international cooperation.

Cory Johnson intends to help the vulnerable groups — immigrants, refugees, women of color and women in poverty — that don’t have a voice.

The rocketeer, researcher and environmentalist believes that advances in sustainability can be adapted from technologies developed for space exploration.

From a smiling valedictorian to Oprah to will.i.am, take a look at some of our favorite moments from an unforgettable day.

Featured speaker Siddhartha Mukherjee — famed oncologist and Pulitzer Prize winner — offers graduates a word of advice: listen.

The musician and entrepreneur joins in the celebration of 30 problem-solver students who break the traditional mold.

“Show up, do the work, get your hands dirty,” the media mogul tells a captivated crowd at the school’s commencement ceremony.

USC 2018 valedictorian looks to the past for lessons that will inspire the Class of 2018 in the future.