What is an Earthquake?

Earthquake is a sudden shaking of the ground caused by movement in Earth’s outermost layer, called the crust. The Earth looks solid, but it’s actually […]

Preparing For an Epidemic

The sudden appearance of a significant number of cases of an infectious disease in a population that is usually free from that disease. Usually caused […]

Choosing a Bank

A bank is a financial institution that accepts deposits and makes loans. It is different from money markets and hedge funds, which are not banks. […]