Twenty Years of the Friz

September 15 will be the 20th anniversary of Ms. Frizzle and The Magic School Bus series. To celebrate, NASDAQ will open with a dedication to the series and Scholastic will release "The Magic School Bus and the Science Fair Expedition," the 11th picture book in the series and the first in seven years, according to Publishers Weekly. Joanna Cole, the writer of the series, says "We have to make it simple enough for kids to understand, but not so simple that the meaning goes out of it."