Q: I read a column on your website about rock retaining walls. I'm having a hard time believing you can build a lasting wall and not use mortar between the stones. What's the secret? A: Why the ...

If you've spent any time traveling on highways in the United States, chances are that you've seen those strange-looking ramps off to the side of the road near large hills and steep inclines. They're ...

Science has taken on a new gravity for fifth-grade students at the Capitol School in Tuscaloosa. The students used K’nex toys, part of that company’s educational package, to construct roller coasters ...

Question: Tim, I read a column on your website about rock retaining walls. I’m having a hard time believing you can build a lasting wall and not use mortar between the stones. I’d love to just build a ...

Q: Tim, I read a column on your website about rock retaining walls. I’m having a hard time believing you can build a lasting wall and not use mortar between the stones. I’d love to just build a wall ...