Article: To keep a cat from getting into trouble, provide your cat with means and ways to express his natural cat behavior. Cats love to run, bite, scratch, and explore by nature, so it's important to give your cat friendly options to play with so he has an outlet for his needs. This can also prevent many disciplinary issues that will arise because he will be more content overall. There are many ways you can help your cat express his inner feline needs.  Provide a scratching post for your cat. Make sure to have one or multiple scratching posts around the house so your cat can scratch those. This will prevent him from scratching your furniture, the walls, or other objects he shouldn't. Have toys for your cat to chew and bite. Chew toys, little balls, and stuffed mice can help your cat use his inner instincts without biting or harming you in the process. This can also deter him from eating other objects that you don't want him to chew on. Create a kitty space or playground in your house that he can use all day long. Cats love to jump, climb, and explore, so get a cat jungle gym or establish a corner of your house that is cat friendly so he can run around without ruining your property. It's important to let your cat know when he does something good. This will help him learn that this behavior should be repeated. Good behaviors can range from using the litter box properly, eating and drinking his food appropriately, using his scratching post instead of the furniture, and playing with his toys instead of your belongings. It's also important to be consistent. Reward your kitty for positive behavior as often as you can so he knows he's on the right track. Treats are common ways to reward your cat. Don't overdo it, however, because it can cause your cat to gain weight. You can also reward your cat by giving him attention. Speaking to your cat in a soothing voice, petting him, or letting him cuddle with you can help let him know that you appreciate what he's doing. A way to help your cat act appropriately and also as a way to reward him is to play with him. When both of you are around the house, bring out an interactive cat toy that he needs you to play with. For example, many cats love dangling toys, such as sticks with feathers or shiny objects at the bottom. Take some time to play with the dangling toy whenever you can. Your cat will get some great exercise and will feel loved. An option for the lazier owner is the laser pointer. Some cats go absolutely crazy for the laser pointer and you can move it all over one room from the comforts of your own couch. Some people protest that the laser pointer is cruel because the cat never gets to catch the red dot, while others would argue that it's more about the chase.
Question: What is a summary of what this article is about?
Provide outlets for his needs. Reward good behavior. Play with your cat.

Problem: Article: Before you clean your TV, turn it off and unplug it from the wall. Turn the TV off first using the remote before you unplug it. Unplugging the TV when it's still on can damage the electrical circuits. If the TV isn't cool when you clean it, the screen will heat the water and this will damage the screen. Use a measuring cup to mix exactly 1 part water and 1 part white vinegar in your spray bottle. If you don't have a measuring cup, use a glass and try to be as close as you can when mixing the ingredients. It's always better to use more water than it is to use more vinegar. If you're using a spray bottle that used to hold another cleaning product, pour dish soap into it. Rinse it out a few times until suds stop forming. Let it dry when you're finished. Don't use paper towels, tissues, or abrasive pads to wipe fingerprints from your TV screen as these products will scratch it. A microfiber cloth will remove the fingerprints without damaging the screen. A couple of sprays of the mixture onto the cloth should be enough. Circular motions will ensure that you don't leave streaks on the screen when you wipe it. Gently wipe the screen so you don't damage it. If there are fingerprints on the frame of the screen, wipe them off in circular motions with the microfiber cloth. Once you've wiped the entire screen with the damp cloth, you can dry it using another cloth. Wipe in small, circular motions once more and pay special attention to any remaining fingerprints or dust on the screen.  Let the TV screen dry for another 15 minutes after you've wiped it. Plug the TV in once it's dry.
Summary: Unplug your TV and wait for it to cool down. Mix equal parts vinegar and water in a spray bottle. Spray the vinegar and water mixture onto a microfiber cloth. Wipe the screen in small, circular motions with your cloth. Dry the screen by wiping it with a clean, dry microfiber cloth.

Figure out the boundaries of the region for which you want to know the population density. Think about why you want this number. Perhaps you want to find the population density of your country, your city, or your neighborhood. You will need to find the total area of this place: usually in feet, miles, meters, or kilometers.  Odds are that someone else has already measured and surveyed this area. Look for census data, read an encyclopedia, or run a web search. Find out whether the area has any set boundaries. If not, you'll need to define them yourself. A neighborhood, for instance, may not be listed in the census, so you'll need to draw the borders yourself. Short of counting the population yourself, you'll need to find an up-to-date record of how many people live in this area. Start by running a web search for the population of the place – say, the city of Houston, Texas. Look for the most recent census data for a relatively accurate number. If you are looking for the population of a country, the CIA World Factbook is a good source. If you are calculating the population density for an area that has not already been recorded, you may need to count the population yourself. This might include a colloquially-defined urban neighborhood, for instance, or a population of kangaroos in a section of the Australian Outback. Try to get as accurate a number as possible. If you plan to compare one area against another, make sure that all of your numbers use a common unit of measurement. For instance, if one county is listed in square miles and another is listed in square km, you will need to convert the area of both countries into either square miles or square km. For easy Imperial-to-metric conversions, visit http://www.metric-conversions.org.
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One-sentence summary --
Define the area. Determine the population. Balance your data.