Chimpanzees have a gentle reputation but can be aggressive and dangerous wild animals. They will defend themselves and their young from potential predators, people, or other chimpanzees. A chimpanzee will use different methods of defense depending on the threat it faces. The level of aggression will

Duct tape is that strong and practical gray-colored tape brought in to fix many different kinds of damage. Duct tape was originally created by the military during World War II as a patching material that was durable and waterproof, according to the Backpacker Magazine website. Because of its strengt

The term "pollution" refers to any substance that negatively impacts the environment or organisms that live within the affected environment. The five major types of pollution include: air pollution, water pollution, soil pollution, light pollution, and noise pollution.

A dowel joint is a wood joint that you make with dowel rods, or pins, and wood glue. Dowel joints can be invisible or visible. Dowel rods can be hardwood, fluted or spiral-grooved. According to woodworker Yeung Cha, the most common widths are 1/4, 5/16, 3/8 and 1/2 inch. The fluted or grooved kinds

Loons are an aquatic bird that like to nest directly on the water of the lake or pond where it lives. Building an artifical loon nest can help make it easier for them to find a home. The process of building is relatively simple, making this a diverse project. Use it as a personal DIY project, in a s

If a body hangs off the center of a wire whose ends attach a negligible distance from each other, then the tension in the wire is half the weight of the body. It is as if each side of the wire holds up one half of the weight--as if they attached to the body at two places, sharing the weight between

The ruby is a red-colored precious gemstone valued since ancient times. There are natural rubies and there are synthetic rubies. Natural rubies are mined in different locations of the world. The criteria today for classifying rubies is established by gemological societies to include aspects such as

If you want more of a challenge when dropping balls into a cup machine then try creating a ramp. With a few around-the-house items and some experimenting, you can build an adjustable ramp to add some excitement to your basic ball-dropping habits using the principles of force and gravity. Whether you

Magnets and magnetic poles have an effect on our lives each and every day. From compasses to the Earth itself, their strength constantly affects us.

As their name suggests, dissolved oxygen meters measure the amount of gaseous oxygen dissolved in an aqueous solution. They are important tools for determining the usability of water sources in sewage treatment, fish farming and other applications. The Milwaukee company is a popular supplier of oxyg

Wall fountains contribute to a serene atmosphere in your home or outdoor living space. You can build a glass wall fountain with decorative sea glass to hang on any wall. Sea glass is semi-translucent, depending on the colors you select. Look for bags of sea glass in an array of colors in craft and d

Creating your own hovercraft is really quite simple. With a few household supplies and a little engineering, you can build a hovercraft capable of holding at least one adult. Though this hovercraft works best if you're coasting over smooth surfaces, you can still use it to play a very large version

Hardwoods are often used in high-quality furniture and flooring. Among the most common types of hardwood used in manufacturing are oak, cherry and apple. However, there is another group of fragrant hardwoods that are more rare and expensive. This group is rosewood, which has several characteristics

When it comes to spicing up a plain mirror, consider recycling wood from an old barn. Old barn wood is a reliable option that is naturally aged to contain an attractive characteristic. Framing a mirror is a simple process that requires a few quick measurements and some minor cutting to complete.

The Columbia River-a vital resource for the Pacific Northwest.columbia river image by Joshua Peterson from Fotolia.comDue to the damming of the Columbia River in the Pacific Northwest, the river no longer flows freely and the environmental impact causes a dramatic increase in northern...

The questions surrounding nuclear power have existed since it was first proposed as a viable energy source in the 1950s. Questions regarding safety and long-term stability have plagued the industry from the beginning. The facts were further addressed after a number of Russian nuclear submarines suff

Inequality equations contain inequality symbols that denote the relationship between the segments. The symbols are > ("greater than"), < ("less than"), ≥ ("greater than or equal to") and ≤ ("less than or equal to".) Inequalities solve the same way as typical equations, working with algeb

When searching for a gift for kids, consider buying them a set of carpenter tools. Carpenter tools provide a long-lasting present that will prove to be useful for many years. While tool sets come in special child size kits, adult tools can also be used. With proper training, kids will learn to build

Gold deposits tend to rest in places where water gets stuck or sits, such as stream and river beds, as well as cracks in rocks that are exposed to running water. Pure gold is not a common find, which is what makes it rare and valuable. Panning for gold is a traditional way of finding pure gold in it

Soybeans and corn are the most widely grown modified crops.Juan Silva/Photodisc/Getty ImagesGenetically modified organisms, or GMOs, typically refers to food crops for human or animal consumption which have been altered using molecular biology and genetics techniques. The plants are...