Bike Riding

Cycling can help to protect you from serious diseases such as stroke, heart attack, some cancers, depression, diabetes, obesity and arthritis. Riding a bike is healthy.

Railroad bridge

A man stood upon a railroad bridge in northern Alabama, looking down into the swift water twenty feet below.

Spacecraft

A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications.