Stuff everyone should know

One card per topic: the quick answer, what's too little, too much and just right, the sources, and a dad joke.

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AllCars & DrivingHome & YardKitchen & FoodTech & GadgetsSecurity & PrivacyHealth BasicsSafety & First AidOutdoors & CampingKids Skills

EveryoneKidsGrown-ups

13 cards

Cars & DrivingIs premium gas better for your car?Only if your fuel door or manual says premium required. Otherwise it's just more expensive.Tech & GadgetsDoes a bigger charger charge faster?Only up to a point. Your phone decides how fast it charges, not the charger.Cars & DrivingHow much air goes in your tires?Not the number on the tire. That's the maximum. Yours is on the sticker in the driver's door jamb.Health BasicsHow much toothpaste should you use?Way less than the commercials show: a pea-sized dab for everyone 3 and up.Security & PrivacyIs a password enough?Not even close. Add a second factor. Any one beats a password alone.Kids SkillsHow long should you wash your hands?20 seconds with soap. That's humming "Happy Birthday" twice.Kids SkillsHow much Halloween candy should you eat?A couple of pieces a day, right after dinner, then brush.Home & YardWhat gas goes in your lawn mower?Regular 87, E10 or less. And never E15 in mowers, boats, or motorcycles.Kitchen & FoodThanksgiving's over. When do the leftovers go in the fridge?Within 2 hours, or 1 hour if it's over 90°F.Safety & First AidHow often do you replace the smoke alarm itself, not just the battery?Every 10 years. Test it monthly.Cars & DrivingIt's 25°F outside. How long do you warm up a modern car?About 30 seconds, then drive gently.Outdoors & CampingYou're lost on a hiking trail. What do you do?Stay put, hug a tree, and blow three whistle blasts.Outdoors & CampingA thunderstorm chases you away from the campfire. When is it safe to go back out?30 minutes after the last thunder.