May 29, 2021 - PBS NewsHour Weekend full episode

Michio Kaku is a theoretical physicist who was inspired as a young child to search for the ‘theory of everything.’ Kaku co-founded the string field theory, which he believes may be the answer to the long quest to understand our universe. Kaku details the history of this search in his new book, "The God Equation." Mori Rothman reports.

Homicides and gun violence are up in New York City and other places across the country. While some blame this on criminal justice reform, advocates say it’s too early to know, given the nation is still suffering from the effects of the pandemic. Christopher Booker sat down with Jullian Harris-Calvin of the Vera Institute of Justice for more.

This week’s mass shooting in San Jose was the deadliest in the Bay Area’s history, and was one of the estimated 230 mass shootings this year. The surge in gun violence has had serious political implications in the past and is likely to do so again. Special Correspondent Jeff Greenfield joins Hari Sreenivasan to discuss.