In one sentence, describe what the following article is about: This icon (downward pointing arrow inside of a circle) is right of the “Purchased” icon and left of the search bar. Safari's updates are included in Apple's OS X updates. In order to update Safari, you must install the newest OS X. Updating Safari may result in improved speed, security, compatibility with new technology, and general ease of use. Every time you visit a webpage, your browser stores data. Clearing this data on a regular basis can improve your browser's speed.  Cache: When you visit a page, the cache stores the content and images locally. The next time you visit the page, the cache can quickly call up and load the content. As your cache fills up, however, it takes longer to find the content and images associated with a specific page. History: Browsers keep a record of every site you visit. This feature allows you to use the back and forwards button. Clearing your search history erases this record. Cookies: Cookies are files that store information about you, the user. This information may include user names, passwords, the contents of your shopping cart, your account information, and autofill entries. Clearing cookies will remove all of this saved data. It is located to the right of the apple icon and to the left of “File”. ..”. It is good to note that this will clear your browser's history, cache, and cookies. If you want to clear the history AND keep Safari's stored data, hold down ⌥ Option. “Clear History” will become “Clear History and Keep Website Data”. Press this new option and then release ⌥ Option.  Safari will only clear data collected from the timeframe you selected. Options include:  “the last hour” “today” “today and yesterday” “all history” (default).
Summary: Launch the App Store. Press the “Updates” icon at the top of the window. Install the latest OS X update. Launch Safari to clear your cache, history, and or cookies. Select “Safari” from the top menu bar. Click “Clear History. Press “all history” to activate a drop-down menu. Select a timeframe from the list. Click Clear History.

In one sentence, describe what the following article is about: BUD/S candidates who have successfully completed “Hell Week,” in which they are awake for virtually five days, say that it is difficult to fall asleep when you are moving around. During Hell Week, BUD/S candidates are subjected to running, calisthenics, and exercises with logs and rubber boats. The soldiers are almost constantly in motion. Try some of the same techniques:  Run sprints or jog around the room. Create an exercise circuit for yourself. Try doing 10 pushups, 10 sit-ups, 10 jumping jacks, and 10 air squats. Repeat this until you feel more awake. Play a game of tag with a friend who is also trying to stay awake. Throw a football or baseball with a friend. Conversation can help you stay awake. Stories can capture your attention; laughing can help wake you up.  Tell your funniest story. Discuss your most embarrassing moment. Tell a suspense story. Chat about what you will do when your period of extended wakefulness is over. Try games that make you use your brain, such as trivia or 20 Questions. Try games that force you to stand up and move around.  Play a game of chess, Monopoly, Trivial Pursuit, Risk, or other board game. Shoot pool or play a game of darts.
Summary: Keep moving. Talk to a friend. Play a game.

In one sentence, describe what the following article is about: You can purchase stationary fans or use ceiling fans in your house. Fans will push around the air in a room and keep it cool. Ceiling fans are often the most effective way to cool down a room, while stationary and tower fans are usually cheaper to purchase. Determine how large you want the fan to be and how it blends in with your existing decor.  If you don't have a lot of space, you could purchase a smaller desk fan. If you need to cool multiple people, you should consider purchasing an oscillating fan. Stationary fans can come in the form of box fans, table fans, and tower fans. You can purchase a stationary fan at most department stores or online. If you place ice cubes or an ice pack in front of a fan, it will create a cool breeze that can significantly cool down a room. This is a great alternative if you don’t have air conditioning. You will have to replace the ice as it melts. Hold your hand in an open window to get the orientation of the wind. Determine which way the wind is naturally blowing and point the fan in the same direction. Position another fan in a different window facing outward, so that it pushes hot air out of the room. This will increase airflow and create a breeze that will cool down the room. Try to remove obstructions in the path of the two windows to improve the airflow. Whether it’s a window unit, central air, or a stationary unit, air conditioning is the easiest way to keep a room cool. Look on the product detail sheet or the packaging of a stationary or window unit to make sure that it’s optimized for the size of the room you want to cool. Then, once you have air conditioning, turn down the thermostat to reduce the temperature of the room.  Air conditioning is the easiest but least energy efficient way to cool a room. Central air is the most effective type of air conditioning. Stationary or mobile units are the least energy efficient types of air conditioning units.
Summary:
Turn a fan on. Place ice cubes in front of a running fan. Create a cross-breeze with two fans. Use an air conditioning unit that’s strong enough to cool the room.