The scratches visible on the flaked base, or flute, of this obsidian point ... Flaked from a stone core carried as source material, blades were fashioned into knives, scrapers, and other tools.

Blade cores provided a portable source of stone or obsidian for manufacturing different ... Blade flakes were "pre-forms" that could be fashioned into knives, hide scrapers, spear tips, drills ...

Over about 11,500 years, the stone has been fashioned into deadly knives, razor-sharp spear points, arrowheads and darts for atlatls, or spear-throwers. The obsidian columns of Yellowstone have ...

It's important to keep your kitchen knives sharp, but what tool should you use to do so? Here are the pros and cons of ...

The Imperial Valley has been recognized as one of the most unique places for geological study. It may not seem like much to ...

Usually basalt, chert and especially obsidian (the black glassy rock ... Remember that usually only stone preserves and is recovered by archaeologists. Stone knife blades (as pictured in Figure 20) ...

There are a lot of tools and equipment in a kitchen, but most chefs will tell you that a good chef's knife is the most important one. However, finding a good one isn't the easiest task.

7. Keep Knives Sharp: It's inevitable that knives will lose their edge over time, but with proper use and maintenance, you ...

While there are lots of knife sharpeners on the market to save you from such a fate, sharpening stones have been used for millennia with the earliest proof of them being used dating back 3.3m years.

Kidney stones are hard objects made from chemicals in your pee. They may be as tiny as a grain of salt or as big as a corn kernel. The stones can be brown or yellow, smooth or rough. They're a ...