Q: Use scissors to cut the bottom off a 2L (68floz) plastic bottle. Then remove a 3-in (7.3-cm) wide panel from one side of the bottle. The panel will extend from the cut off bottom to where the neck of the bottle begins to curve toward its spout. The plastic may be jagged where it was cut with scissors. Use medical tape along the cut edges of the bottle for padding. Poke breathing holes into the bottom of an aluminum can with scissors or a screwdriver. After that, cut off the top of the aluminum can with a sturdy pair of scissors, tin snips, or shears. Be careful when handling the cut metal of the can. It is often sharp enough to easily cause cuts. A layer of duct or medical tape can be used on sharp edges as padding. Insert a layer of cotton into the bottom of the can. Add a layer of activated charcoal on top of the cotton, then sandwich the charcoal with another layer of cotton on top. Tape cotton over the cut top of the can, then cut a small hole in the cotton. Use caution when loading the aluminum can with charcoal, especially if you decided not to pad its sharp edges with tape. Insert the spout of the 2L (68floz) bottle into the hole in the cotton at the top of the can. Tape the aluminum can to the 2L (68floz) bottle to complete the mask. By breathing through the spout, the air you breathe will be filtered by the charcoal in the can.
A: Fashion a mask from a plastic 2L (68floz) bottle. Create a filter chamber with an aluminum can. Load the gas mask with activated charcoal. Tape together the gas mask and use it when necessary.

Article: On Android devices, the Firefox start page is actually a grid showing previews of your "top sites." To view this start page, tap on the title bar, then Bookmarks, then Firefox Start. On the start page, tap and hold on the site you want to add permanently. Select Pin site from the pop up menu to make it a permanent fixture of your start page. If you don't see the site you want on the grid, tap and hold a square you are not interested in. This time, select Edit from the pop-up menu. Now you can enter a URL, or choose a site from your bookmarks or most visited sites. If you swipe out of the Firefox app, it will continue running in the background. If you want to see your pinned sites the next time you open the app, tap the menu icon and select Quit.
Question: What is a summary of what this article is about?
Visit the Firefox start page. Pin a site to your start page. Add a new site to your start page. Quit the app at the end of each session.

Q: Many couples meet in college or graduate school. It's a place where people have things in common, spend time near one another, and get a sense of one another as workers and friends. If you've already gone to school, or are unable to return, try taking extension classes in subjects that interest you: cooking, foreign languages, dance, or business. Not only is school an excellent place to meet a potential mate, but getting an education can increase the longevity of your future relationship. Couples with college education have lower divorce rates than their less-educated peers. Your mental and physical health influence who is willing to date you, and for how long. Get regular exercise and a full night's sleep each night. Eat regular meals, healthy snacks, and avoid soda and refined sugar. Visit the doctor regularly. Take particular care of your mental health. If you are too shy, depressed, anxious, or insecure to date, visit a therapist. To attract a partner, look your best. Be clean. Shower often, but use shampoo no more than three times a week. Brush your teeth and floss after eating, so that your breath is fresh and your teeth look healthy. Dress to suit yourself. Fashion choices are going to vary widely depending on your tastes, but in general, wear clothing that fits your body, is clean, and is not very worn out. Wear the colors that flatter you, or wear black and neutrals if you can't figure out what your colors are. You won't find someone who loves you if you are unloving of yourself. Pursue the things you want in life: a job you like, friends who treat you well, hobbies you enjoy, and good communication with your family. Take care of your emotional, physical, and financial wellbeing. Treating yourself well demonstrates emotional stability, an extremely attractive characteristic. Friends are the mostly likely people to introduce you to your life partner. They are also the people who will help you through the rough cycles of dating, who will support you when you find someone you like, and who will be your companions when you are lonely. It's hard to date if you're isolated, and it's hard to come off as confident and attractive if you're lonely and desperate for companionship. Be good to the friends you have. You don't have to be a social butterfly. Keep the social commitments you make, reciprocate favors, and tell your friends what you appreciate about them.
A:
Get an education. Take care of your health. Take care of your appearance. Love yourself. Nurture your friendships.