NSES Content Standard G  
History and Nature of Science: Science as a human endeavor 
Grades K-4, page 141 

Many people choose science as a career and devote their entire lives to studying it. Many people derive great pleasure from doing science. 

Benchmark 1C The Nature of Science: The Scientific Enterprise
Grades 3-5, page 16
Doing science involves many different kinds of work and engages men and women of all ages and backgrounds.