Article: USB ports are slim rectangular openings with three-pronged symbols next to them. You'll typically find them on the sides of laptops' casings, though their locations vary for desktop computers. If you can't find a USB port on your desktop computer, try looking at the sides or back of the keyboard, back of the CPU, or behind the desktop monitor. Some MacBooks don't have USB ports. The USB end of the charger is a rectangular piece of exposed metal; if you look at its end, you'll see a block of plastic inside. When plugging the cable into the USB port, make sure the three-pronged symbol on the USB cable is facing upward. You may need to disconnect the cable from the power adapter cube first. Do so by gently tugging on the USB end of the cable until it disengages from the power adapter. There are two types of charger cables for your iPhone and iPod: Lightning - iPhone 5 and up; iPod touch 5th Generation and up. This cable's charging end is relatively narrow and flat. 30-pin - iPhone 4S and down; iPod touch 4th Generation and down. This cable's charging end is wide and flat. If you're using a Lightning cable, the charger should fit no matter how you insert it into the device's charging port; however, a 30-pin charger must be inserted with the grey rectangle icon on side of the charger facing the same way as the iPhone's screen. A second or so after plugging it in, your iPhone/iPod should make a sound (or vibrate), and the screen should briefly display a battery icon. If your device doesn't begin charging, try using a different electrical outlet.
Question: What is a summary of what this article is about?
Locate a USB port on your computer. Plug your iPhone or iPod cable into a USB port. Determine the type of charger cable you have. Insert the other end of the cable into the bottom of the device. Wait for your device to begin charging.

Problem: Article: Wait until you've got a full load of clothes before running the washing machine. Don't turn on the dishwasher until it's full, and allow your dishes to air dry rather than automatically drying. By minimizing the amount of drinkable water you use for other purposes, you're helping to protect your local water resources which are jeopardized in many areas. Taking shorter showers, or turning off the water while you lather up, will save water and money. Set a timer if you need to. Use water-conserving faucets, shower heads and toilets. Turn the faucet off while you brush your teeth or shave. When you leave a room, make sure the lights are off. Having lights set on a timer may help you reduce the time they're left on. If you use lights outdoors, make sure they're motion sensitive so that they don't get left on. Use natural lighting whenever possible, and consider installing skylights or light tunnels to light darker areas of the house. Switch to energy efficient lightbulbs. Using less electricity translates to fewer greenhouse gases being discharged into the environment from your energy company. Unplug chargers when they're not in use. Chargers for your electronic devices are constant energy users, even when your device is unplugged. Reducing your electricity usage benefits the environment and can save you money. Remember that whatever goes down your drains will eventually end up in your local streams and creeks. Using biodegradable, or biocompatible, products will have less impact on the local wildlife. Usually biodegradable products will list this information on their labels. Look for this designation. Avoid ingredients that are "antibacterial" or "antibiotic" as the ingredients in these can negatively impact the environment. Also avoid scented products, bleach, boron/borax, chlorine bleach, or ingredients with the word sodium in them, such as sodium hypochlorite. Before you fly, consider the option of driving. If you can drive, consider carpooling, or taking a train or public transportation. If you're in the habit of driving or flying, you may be using unnecessary fossil fuels and negatively impacting the environment. If you're going to fly, try to fly non-stop, as this will use less fuel. Consider walking anyplace less than a mile away. Try biking to nearby destinations. Look into telecommuting into work occasionally to conserve energy. Conserve energy in your home by providing weatherstripping and caulking all windows as well as insulating your ceilings and floors. Purchase appliances that are energy-efficient; look for the "energy-star" designation. Use a programmable thermostat to conserve energy when you're less active. Make sure your heating and cooling systems are well-maintained and operating efficiently.
Summary: Conserve water in your home. Turn off unnecessary lights. Use biodegradable cleaning products. Consider your transportation options. Reduce the carbon footprint of your home.

Angelfish may not do well with other fish. They tend to be territorial, and may attack and even eat smaller fish. If you introduce other fish, stick to other angelfish or fish of a similar size. If an angelfish becomes diseased, you will need to talk to a vet or a pet store worker about treating the illness. This is especially important if you have other fish in your tank. One sick fish could infect the tank. Excessive slime and clamped fins can be a sign of a very serious disease called angelfish virus. If you suspect your fish has the virus, it may need to be put to sleep as there is no cure. White chalky feces, a lack of appetite, and weight loss can also indicate disease. There is also a common disease called ich that causes white spotting due to parasites. It can be treated easily with medication, so keep ich medication on hand when you have angelfish. If an angelfish is showing signs of disease, remove it immediately and place it in a quarantine tank. Seek the care of a veterinarian to discuss treatment options or ask at a local pet store. Do not put the fish back into the tank until the signs of disease have passed, as you do not want disease to spread.
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One-sentence summary --
Use caution when placing angelfish with other fish. Watch for signs of disease. Quarantine sick angelfish.