Math professor shares thermo-dynamic hack to cool your sweltering car in seconds

You don't even have to use your A/C.

Cars can become unbearably hot in the summer. Even at a seemingly mild 80 degrees outside, the temperature inside can soar to a scorching 109°F within 20 minutes. According to the CDC, in just 40 minutes it can escalate to a blistering 118°F. After an hour, it can peak at a searing 123°F. And that’s just the air temperature; a dark dashboard or seat can reach a staggering 200°F.

That’s why Hannah Fry shared an amazing hack on TikTok, demonstrating how to cool your car down in seconds using the laws of thermodynamics.

Oncologists share 15 surprising things they personally do (and don't do) to prevent cancer

“I used to drink very hot coffee but I drink it warm now since very hot drinks damage esophagus can cause esophageal cancer.”

Nearly all of us know a loved one who has been diagnosed with cancer. Many of us have it ourselves, and there’s been an alarming increase of young people (under 50) receiving diagnoses. All this to say, a large number of us might be wondering what changes can be made in order to stave off the disease.

A few oncologists, along with a few other alleged medical professionals, shared what they personally do (or don’t do), given what they know about cancer. There might be a few discrepancies in opinions here—particularly in how strict to be with alcohol—but it does paint a good picture about how to create a lifestyle that can help prevent a visit to their office.

Here are 15 of our favorites, and many of them go beyond the usual "get diet and exercise" fare.

Did you know that our beaches are dirtiest after July 4th? Let's do something about it!  

Calling all LA friends! See you at the beach on July 13th for a good cause.

We want to hang...IRL! We’re teaming up with Ocean Wise and GOT BAG to host a beach cleanup at Dockweiler Beach in Playa del Rey, CA on Sunday, July 13th to make some waves for the environment. And you’re invited!

We’re excited to show appreciation and care for our natural world, and to have a reason to gather the Upworthy family IRL. More info and RSVP at our event page here. Can’t wait to see you there! 

Feeling stuck in life? Real people share 10 time-tested ways to 'unstick' yourself that actually work

"Just take one thing you need to be doing, and do it for two minutes."

First of all, you're not alone. Feeling "stuck" can—and usually does—happen at any stage of life. It's not a reflection of your success status, your love attachment, or even necessarily your choices. But it can feel like you're walking in sticky molasses with no way out. These feelings could range from mere procrastination on small tasks to a bigger picture "stuckness" wherein you might feel an existential angst that seems to freeze your ability to make change.

In 30 seconds flat, Stanford professor Graham Weaver shares ways to become unstuck, which he also imparts on his students. He begins by asking four questions.

Mom asked daughter what she liked about her 2nd grade teacher, and got a touching reply

"Thank you for making her feel this way."

John Steinbeck nailed it when he said “a great teacher is a great artist…teaching might even be the greatest of the arts since the medium is the human mind and spirit.” This is why many teachers often receive little thank-you trinkets and treats. I specifically remember giving out those red foil chocolate roses to some of my teachers. Remember those?

Then again, sometimes nothing quite encapsulates immense gratitude like a handwritten note. As the school year came to a close, one mom began writing a personalized thank-you card to her daughter Mia’s second grade teacher, filled with all the things Mia specifically appreciated about her this year.