8th grader's award-winning experiment tested if dogs' tongues are really cleaner than ours

Here's what science says about letting your dog lick your face.

With nearly half of the households in American having at least one dog, there's a lot people need to know about them. Our furry friends come in wide variety of breeds, each with their own unique traits and needs. "Man's best friend" can be a guardian, a helpful worker, a loyal friend, and a snuggly companion, but there's one thing almost all dogs have in common: Licking.

Some dogs lick way more than others, but it's rare to find a dog who never licks anyone or anything. Many dogs communicate and show affection by licking, which is sweet—if a little gross—depending on how slobbery they are. There's a common saying that dogs' mouths are cleaner than humans', which is a bit hard to believe when you see what some dogs put in their mouths, but it is true? What does science say about dog tongues and saliva? Is a dog licking our face something we should worry about?

12 of the most unbelievable moments ever captured on live TV

It's hard to believe how many world-altering events were unintentionally broadcast to millions

The first television was invented in 1927. In the early days, much of the programming available was previously recorded. It wasn't until around the 1950s that we had the technology for live broadcast television.

Simply put, live TV changed everything. It was only a few years earlier that the Hindenburg disaster had the world's attention rapt. The incident saw a state-of-the-art Zeppelin flying machine burst into flames without warning, killing 36 people. You might remember, even if you can't place it, the iconic and tragic radio broadcast of the accident: "Oh, the humanity!" Though even that commentary by broadcast journalist Herbert Morrison was recorded live and broadcast to the world much later.

How do you know someone is very smart? Here are 15 'subtle signs' others notice.

"You can understand both sides of an issue and still think one is wrong."

There is a big difference in how highly intelligent people communicate versus those with smaller IQs. A Redditor named Occyz wanted to know how people tell the difference by asking them to share the “subtle” signs that someone is very intelligent.

The question was a big hit on the forum, receiving over 4,000 responses.

Science confirms ‘Move in Silence’ trend might be the smartest way to achieve your goals

“I promise you things always work out better when you keep them to yourself.”

TikTok's latest viral wisdom is backed by hard data—and it's making people rethink their communication habits. We live in a world of chronic oversharing. We post everything, from the routes we run (including screenshots as proof of all that hard work), to the pale-green iced matcha latte sitting at our desks or a present from a boyfriend (who will be tagged prominently, not secretly off screen).

Who knows when, but our brains became wired for sharing: to record, to curate, and to post every second of our lives, then consume that of others to a disturbing degree. So, here's a radical idea: when it comes to goals and plans, try keeping them to yourself. It could be the key to making them a reality.