context: In 1999 he hosted an eight-part primetime series for ABC Nightline called Brave New World (which frequently featured his friends, They Might Be Giants, as musical guests).
source: Krulwich, in 2004, became the host and managing editor of the innovative PBS science program NOVA scienceNOW.
reference_original: Krulwich, en 2004, pasó a ser el presentador y editor manager del innovador programa científico PBS NOVA scienceNOW.
reference_flipped: Krulwich, en 2004, pasó a ser la presentadora y editora manager del innovador programa científico PBS NOVA scienceNOW.