When you look at Ryobi's 40V battery line, you may wonder how much weight will be added to your power tools. Here's how heavy ...

Plus, the editor-approved products to weight your walks.

Math, citizen science and the scientific method are all tools researchers use to investigate evidence of unidentified phenomena and reveal they may just have a down-to-earth explanation.

I made my own 45 lb weight plates for under $10 using concrete, a trash can, and some PVC pipe. Commercial plates can cost up ...

IF YOU'RE AIMING to build muscle, you know you need to hit the weights. But exactly how heavy (or light) should you be training? Whether you're getting your workouts off Instagram, or from your ...

On loan from the Kenyan government since 2011, this stone, known as the Kanjera tool after the site where it lay buried, is the oldest human-made object in any Smithsonian collection. The stone ...

The weight rule follows this principle: if I bring something in, something of equal weight has to be taken out. It’s like a leveled-up “one in, one out rule” but keeps things even more manageable ...

However, this doesn't mean that low levels of thyroid hormone mean a person will gain weight (or conversely that high levels will ignite weight loss.) There are many factors involved in these ...

The signals are sent out as short pulses which may be reflected by objects in their path, in part reflecting back to the radar. When these pulses intercept precipitation, part of the energy is ...

Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to ...