Teacher Karen Pate assists math teachers with Common Core materials in Baltimore. As in other states, Maryland teachers are attending trainings to prepare to implement the new standards this fall. Gwendolyn Glenn/WYPR hide caption

Howard Buffet on his 1,400-acre research farm in Wilcox, Ariz. Buffett, the son of billionaire investor Warren, is working to find permanent solutions to the world's hunger problems. Nick Oza for NPR hide caption

Born in Texas and settled in Nashville, Tenn., Guy Clark has mentored generations of artists, including Rodney Crowell, Lyle Lovett and Steve Earle — all of whom cite his keen editing skills and prize his stamp of approval. Jim McGuire/Courtesy of the artist hide caption

Daniel Breaker, a Juilliard-trained actor who's earned praise for roles as varied as Donkey in Shrek the Musical and the protagonist Youth in Passing Strange, gets to play a king in a new musical adaptation of Shakespeare's Love's Labour's Lost. Tammy Shell/The Public Theater hide caption

Dr. Howard Novick says new abortion restrictions in Texas could force him to close the Houston clinic he opened in 1980. He says he doesn't have the more than $1 million required to convert his office into a surgical center with wide corridors and sophisticated airflow systems. Pat Sullivan/AP hide caption

The Mount Charleston blue butterfly is a rare species found only in a few small areas high up in Nevada's Spring Mountains. Corey Kallstrom/USFWS hide caption

Harold Lloyd (left) is the All-American Boy, a striver who'll brave nearly anything to get to the top and win The Girl. Noah Young is The Law (center) and Bill Strother is The Pal. Criterion Collection hide caption

Ensenada Slaw Patricia Mulvey for NPR hide caption