In Sarah Yuska’s sixth-grade science class at Monocacy Middle School in Frederick, Maryland, students are just finishing up learning about body systems—respiratory, circulatory, skeletal, and so on.

A food web is a detailed interconnecting diagram that shows the overall food relationships between organisms in a particular environment. The simplest explanation is that food webs are "who eats whom" ...

Ahead of the November presidential election, just 19% of Americans say democracy in the United States is a good example for other countries to follow, according to a Pew Research Center survey ...

A parable is a simple story used to illustrate a moral or spiritual lesson, as told by Jesus in the Gospels. The word "parable" comes from the Greek word "parabolē," which means "comparison" or ...

Bullying is a form of aggressive, potentially violent behavior. Bullying can occur at school, online, in the workplace, or at home. It can also be grounded in prejudice. Bullying is an aggressive ...

On April 3, 1968, standing before a crowded church, the Rev. Martin Luther King Jr. painted his vision for justice. “I’ve seen the Promised Land,” he said. “I may not get there with you. But I want ...

Abstract: On the basis of Matlab mathematical tool, nonlinear programming function-fmincon is used to optimize and design allocation plan for radiological workers at strong radiation field in this ...