age = int(input("How old are you?")) if age >= 70: print("You are aged to perfection!") else: print("You are a spring chicken!") This program uses selection to ...

Tests of characteristics associated with PUIDs are made in a form or mathematical logic known as a Boolean expression (after George Boole who invented it). A Boolean expression combines ...

Understanding how defined cell types contribute to organism function is a central goal in biology and an acute challenge in neuroscience 1. Recent development of optically modulated, genetically ...