In one sentence, describe what the following article is about: Using your forefinger and thumb, pinch your upper eyelid. Be sure to grab the outer ridge of skin on your eyelid, not just your eyelash, as this may lead to you pulling out some eyelashes. Once you've got a good grip on your eyelid, pull it up above your eye, around where your eyebrow is. This will probably feel strange, so don't freak yourself out! In one smooth motion, use your thumb to press your eyelid against the bone under your eyebrow (the supraorbital arch) and withdraw your forefinger. Your thumb will then be holding your eyelid up against your face without your forefinger. Now, with your thumb, gently push your eyelid down so that it folds over itself and flips inside-out. The push-force should be more against your face as you lower your eyelid with your thumb. This is so your eyelid doesn't slip from under your thumb. Follow the same steps you used for your other eyelid. If you're not ambidextrous, this may feel very awkward, but after a few tries you should begin to get the hang of it. After you are satisfied with your friends' freaked-out reactions, you'll probably want your eyelids back in normal, functioning order. Simply look up really hard with your eyes or blink really hard with your eyelids to return your eyelids to normal.
Summary: Pinch your eyelid. Pull your eyelid up. Press your eyelid. Push your eyelid down. Repeat this process with your other eyelid. Return your eyelids to normal.

Sinkholes are often triggered by weather phenomena, such as a heavy rainstorm. Once a sinkhole has formed, though, it can continue to grow, as further portions of limestone or other carbonate rocks fall away. As long as a sinkhole continues to grow on a day-by-day basis, do not attempt to fill it in. Once the sinkhole has stopped growing and remained the same size for a few days, you can fill it in. Only relatively small, shallow sink-holes can be filled by homeowners. Take a pole or stick (even a tree branch would do), and probe around in the sinkhole. Note how deep and wide it is. Exercise caution when walking around the edge of the sinkhole! The ground can be very unstable, so take care not to fall. Do not attempt to fill in a sinkhole larger than 3 feet (0.91m) in diameter. Large sinkholes can be deep and potentially dangerous. If the sinkhole is deeper than chest height, do not step down inside of it. Deep sinkholes, and holes with steep walls, pose a high risk of collapse. If you're concerned about working in and around a sinkhole, or if you think that the sinkhole is too large for you to fill, it's time to call professionals. Use Internet resources to find a local landscaping company, and explain that you're hoping to have a sinkhole on your property filled in. Landscaping companies will have more experience in dealing with this phenomenon than the average homeowner. When dealing with very large sinkholes, you'll need to contact local authorities in the city or county in which the sinkhole has appeared.
++++++++++
One-sentence summary -- Monitor the hole to see if it grows. Probe the size and depth of the sinkhole. Call a professional landscaping company.

Problem: Article: This could indicate wheel misalignment, improper inflation pressure, the need for tire rotation, or all of the above. Regardless of the specific reason, uneven tread wear is a sign that you need to take your car in for servicing. If uneven tire wear is extreme or if tires wear out much faster than expected, have a competent tire workshop check your suspension and correct it as necessary before replacing tires. Improper alignment or worn suspension parts can dramatically shorten a tire's life. Rotate your tires from front to rear in pairs to avoid irregular tread wear. Take both front tires and move them to the rear and vice versa. The sidewall is the tire surface outside the rim that faces you when the car is parked. A bulge indicates that the rigid internal frame of the tire has been damaged and cracked, allowing air pressure to reach the flexible outer layers of the tire. Any tires with sidewall bulges should be replaced immediately, regardless of the tread status. Such damage could be caused by driving through a large pothole, driving over a curb, or by driving with low tire pressure. Never continue to drive on a tire that has a sidewall bulge. This indicates that the structural integrity of the tire has been significantly reduced, which greatly increases the likelihood of a sudden failure or blowout at highway speeds. If your tires are worn unevenly, you may feel a vibration in the steering wheel when you are driving. If the vibration starts at 40 to 50 mph (64.37 to 80.47 km/h) and intensifies as you increase your speed, you probably need to balance your tires. If that doesn't stop the vibration, the tire is most likely damaged and needs a full replacement. If you experience vibrations in the absence of tread damage, try balancing and aligning your tires' shock absorbers. If you notice tire vibrations along with other tire damage indicators like abnormal bulges and irregular tread wear, you probably have to replace your tire. If you notice that your tires are cuppedmeaning they have a cupped or scalloped appearance around the tirethey likely aren't being rotated enough. If you see little cracks all over your tires, it means that the rubber is breaking down. Tires with dry rot can fall apart and separate from the steel belt, which causes damage to the exterior of the car. In some cases, your wheels might start rotting before the tread starts to diminishyou should still bring them in to be inspected or replaced. Inspect for dry rot before heading out on any longer trips and bring your car in for a check-up regularly. Degrease your tires to prevent dry rot, especially if your tires are exposed to a high degree of sunlight. Check the 4-digit code on the wall of the tire for its age. Regardless of your country, most governmental transportation departments place 4-digit numbers on the wall of each tire. The first 2 numbers represent the week it was made and the last 2 represent the year. For example, 12/08 means your tire was made in the 12th week of 2008. If the tire is more than 6 years old, replace it. If you're having trouble finding the number, look for the initials DOT, followed by other letters and numbers. The code should appear following dot and will not contain any letters. Remember that although 10 years is the maximum service life for tireswhich means since the date they were manufacturedthis should never be used as the maximum drive time. Always err on the side of caution if you suspect your vehicle has tires that are over 6 years of age. Always change your tires if the tread is below the minimum depth recommendation, which is often 232 inch (0.16cm).
Summary:
Bring your car in for maintenance if you notice irregular tread wear. Check for any abnormal bulges or bubbles in the sidewall. Balance your tires if you feel steering wheel vibration. Check for dry rot and have affected tires inspected or replaced. Replace your tires at least every 6 years.