For the record - May 16, 2013

DNA and breast cancer: A Q&A; in the May 15 Section A about how genes influence breast cancer risk implied that the average woman’s risk of developing breast cancer was 50%. As stated elsewhere in the article, most women face a 12% to 13% lifetime risk of the disease. For women who have certain mutations in their BRCA1 and BRCA2 genes, that risk rises to between 50% and 87%.

USC donors chart: A chart in the May 15 Calendar section with an article about Dr. Dre and Jimmy Iovine pledging $70 million to USC had the headline “Biggest USC donors.” The chart listed celebrity donors, not the biggest donors to the university.

Carbon dioxide emissions: An article in the May 13 Section A about efforts to reduce carbon dioxide emissions from coal-fired plants said that American coal plants are the single-biggest source of greenhouse gases in the world. They are the single-biggest source in the United States.

Atomic past: An article in the May 12 Section A about atomic testing in Nevada referred to the bombs dropped on Japan at the end of World War II as hydrogen bombs. They were atomic bombs. In addition, the article said that there were 235 detonations at the Nevada Test Site from 1951 to 1962. There were approximately 100 above-ground detonations at the site.

Court-martial: An article in the May 14 Section A on the court-martial of Army Sgt. John Russell, who was found guilty of murder in the deaths of five fellow servicemen in Iraq, said Navy Cmdr. Charles “Keith” Springle had a degree in clinical psychology. His degree was in social work. In addition, the article said Springle had not met Russell. Springle had seen Russell as a patient once before the shooting.

Arrest in Texas: An article in the May 11 LATExtra section about the arrest in West, Texas, of paramedic Bryce Reed on a pipe-bomb charge said that he was taken into custody Friday. Reed was arrested late Thursday.