It was a real pyramid scheme. Scientists have proposed a groundbreaking new theory on how Egypt’s Great Pyramid was built, positing that they used a pulley and counterweight system to erect it so ...

Tennessee executed Harold Wayne Nichols by lethal injection Thursday in Nashville for the 1988 rape and murder of Karen Pulley, a 20-year-old student at Chattanooga State University. Nichols, 64, had ...

Harold Wayne Nichols, the East Ridge man who was convicted in the rape and murder of Karen Pulley, died by lethal injection on Thursday morning. State officials said, "Today, by order of the Tennessee ...

Tennessee is set to execute a serial rapist, dubbed the "red-headed stranger," for the brutal murder of one of his victims, a promising young college student attacked in her bed. Harold Wayne Nichols, ...

An East Ridge man who has been on death row for decades is finally set to be put to death on Dec. 11 at 10 a.m. (CST). Harold Wayne Nichols is due to die by lethal injection since he did not make a ...

A murderer who raped and killed a student 35 years ago declined to choose between the electric chair and lethal injection for his execution. It means Harold Wayne Nichols will instead by given the ...

The Great Pyramid of Giza—the largest of Egypt’s pyramids—consists of about 2.3 million limestone blocks. The smallest of these weigh two tons, while the largest weigh over 60. History says laborers ...

Discover how pulleys make lifting easier by spreading out force and changing direction. This science extra explores simple machines in action breaking down how pulleys work and where we use them every ...

This video explores different methods that can be use to amplify a force, and focuses on three types of machine - levers, pulleys and gears. The amplification of a force is called mechanical advantage ...

This headlamp has everything you'd expect from a Petzl product. It is lightweight but very well made, throwing out 450 lumens up to 75 meters. There are a few small niggles, but nothing that would put ...

One common misconception is that belts will slip more frequently on composite pulleys than on metal pulleys. Not so! The wedging action of V-belts is so efficient that slip should never be an issue; ...

A Cape Coral man whose arrest became a "landmark" case in Southwest Florida involving the deadly distribution of fentanyl will spend life behind bars. Joshua Robert Pulley, 32, on Tuesday morning was ...