When my students grow too dependent on their calculators, I ask them to find a number that, when multiplied by itself, gives them 2. Students quickly see that since 1² = 1 and 2² = 4, the answer has ...

The question of whether a god exists is heating up in the 21st century. According to a Pew survey, the percent of Americans having no religious affiliation reached 23 percent in 2014. Among such ...