Article: Carbon monoxide (CO) is a colorless and odorless gas that’s toxic to the body. Plug in your carbon monoxide detectors in an outlet at knee-level or lower since CO is heavier than air. Place at least 1 detector on each level of your home.  Never block a carbon monoxide detector with furniture or curtains since they could restrict air flow. If you have pets or children that would interfere with the detectors at knee-level, plug the devices in chest-level outlets. Portable gas detectors can sense the gas concentration in certain areas of your home. Walk through your home with the gas detector, keeping an eye on the display meter. Whenever they sense a concentration too high, an alarm will go off to let you know the area is not safe. Gas detectors can be purchased from your local hardware store. Radon is a natural gas that’s odorless, colorless, and tasteless naturally found in the ground. Place a short-term test kit in the lowest level of your home where people spend time and leave it there for 90 days. Use the envelope provided in the kit to send the test to a lab where they can calculate the radon levels. If it comes back with 4 pCi/L (picocuries per liter) or higher, you need to call a professional to install a radon mitigation system in your home. Avoid keeping radon tests in areas that get damp and humid, such as the kitchen, bathroom, or laundry room.
Question: What is a summary of what this article is about?
Place carbon monoxide detectors in your home. Use a handheld natural gas detector to find the source of the leak. Set a radon detection test in the lowest level of your home.
Article: Mark the point on the wall where you want to drill using a soft pencil with a small dot or cross. Place your drill on the mark and drill briefly, using a low speed (if your machine has speed control) or in short bursts (if it doesn't). Make a shallow hole (⅛ to ¼ inches / 3 to 6 mm) to help guide your drill for the real hole. If the project requires a large diameter drill bit, consider using a smaller drill bit for the pilot hole. This will increase the drill's stability. Turn on the hammer function if your drill has one. Place the drill in the pilot hole, keeping it exactly perpendicular to the concrete surface. Start drilling with firm, but not forceful, pressure to push the drill forward. Gradually increase the drill speed and force if necessary, but make sure the drill is stable and under your control at all times. Concrete is not a homogenous material, and the drill bit can easily skate if it hits an air pocket or pebble. Apply enough pressure to hold the drill in place, but do not force it forward (this increases wear on the bit and can even break it). You will learn the right amount of pressure from practice. Bring the drill back slightly and press it back in again every ten or twenty seconds. This helps pull dust out of the hole.  Occasionally stop the drill and pull it out to let it cool for a few seconds. This is especially important for ordinary rotary drills, since they can easily overheat during a lengthy drilling process. You may feel a little bit of recoil and kick from the drill. Sometimes, a drill does not go as expected. If you hit an especially hard piece of concrete, insert a masonry nail into the hole and hammer it in to break up the concrete. Take care not to drive the nail too deep to easily remove. Insert your drill back and continue drilling. If you see sparks or see metal, you have hit rebar. Stop drilling immediately and switch to a rebar-cutting drill bit until you are past the obstruction. Removing dust improves the strength of concrete anchors. Use a squeeze bulb or can of compressed air to remove concrete dust from the hole, then vacuum it up. Leave your goggles on while doing this to protect from dust and debris.  Concrete dust can be hazardous to breathe in, so make sure you wear a mask during this process. You can also extract the dust by using a damp cotton swab to wipe it out.
Question: What is a summary of what this article is about?
Mark the drilling spot. Drill a pilot hole. Continue drilling with more power. Pull the drill out periodically. Break through obstructions with a masonry nail. Blow out the dust.
Article: In a small bowl, mix half a teaspoon of baking soda with the quantity of toothpaste that you normally apply to your toothbrush. Stir them together. Apply the mixture to your toothbrush. Brush your teeth thoroughly for two minutes, covering your entire mouth. Spit out excess toothpaste. Rinse your mouth out with water. As an alternative, purchase a toothpaste that already contains baking soda. Since baking soda has been used a teeth cleaner for over 150 years and is fairly inexpensive, it is present in may major toothpaste brands in different quantities. Opt for a toothpaste with a high concentration of baking soda (e.g. Arm and Hammer toothpaste).
Question: What is a summary of what this article is about?
Mix toothpaste and baking soda. Brush your teeth thoroughly. Buy a toothpaste that contains baking soda.