The Adulting Handbook: 30 Things You Should Know Before You Turn 30

When buying oysters, you can request to see the “shellfish tag,” a legally required documentation of the harvest date and origin of the oysters. Every retailer and restaurant is required to have a shellfish tag for each bag of oysters that they purchase for up to 90 days after that purchase. One expert says, “if they don’t have that tag, I wouldn't eat those oysters.” She recommends looking for the most recent date on the tag (whether it’s the “final harvest date”, or “wet storage date”) - anything further out than 2 weeks won't taste as good and increases the risk of a bad oyster.

“Lifeline” is a federal program in USA that gives you a free phone and plans if you’re on medicaid, SNAP, or make less than a certain amount. The plans vary, but it normally provides 200 minutes, unlimited text, and 1 GB of data.

If you haven't heard from someone who lives far way and you are worried something may have happened, you can ask the police to do a “Wellness Check.” They will visit the person's home just to make sure everything is okay. If you live in the area then you can also accompany the police there, if you don't want to visit alone.

If you want to listen to music or an audiobook on your iPhone or iPad before you go to sleep, you can have it turn off automatically using the clock app.

In most major U.S. cities, it is common courtesy to use the right-hand side of an escalator for standing and the left-hand side for walking.

You can help fight human trafficking by uploading photos of hotel rooms you stay in via an app called the TraffickCam. Traffickers regularly post photographs of their victims posed in hotel rooms for online advertisements. These photographs are evidence that can be used to find and prosecute the perpetrators of these crimes. In order to use these photos, however, investigators must be able to determine where the photos were taken.

Many lilies are poisonous to cats and can be fatal or result in severe kidney failure. Be careful when shopping for Valentine's Day bouquets if you have kitties.

The Aviation Safety Reporting System (ASRS) is run by NASA for airline staff (pilots, flight attendants, controllers, ground crew) to anonymously report incidents during flights without fear of career repercussions. The database is available to the public.

You can stop telemarketers in Australia by putting your number up on the do not call list on the government website. If they call you when your number is up they are breaking the law and may face penalties. Even if you aren’t on the register they’re breaking the law if they call before 9 am or after 8 pm on weekdays, before 9 am or after 5 pm on Saturdays and anytime on a Sunday or a national public holiday.

Roombas/cleaning robots can have trouble on dark carpets, due to the robot’s cliff sensors interpreting it as the edge of a surface (like a stair).