My In-Laws Are Careless About My Deadly Food Allergy is a letter sent in to The Cut's Ask Polly column. It's the second-most amazing agony aunt letter I've ever read.

I have a very severe allergy to mushrooms ... Since then, most meals we have shared at my in-laws’ house have had very limited options for me. Somehow, they manage to find a way to add mushrooms to almost everything. One time, they made a point to make a special plate of mushrooms and pass it around. My mother-in-law said, very rudely, “I would’ve liked to add mushrooms directly to the salad, but SOMEBODY has problems with it!” They even added mushroom powder to the mashed potatoes at one holiday dinner. My mother-in-law claimed it was a new recipe she’d found.

This is just the beginning; it'a rollercoaster ride into mycological madness.

Following is my number 1, posted by Slate's Dear Prudence in 2012. First, the shot...

My mother-in-law hates me ... the problem is that after each visit, I wind up with a bad case of diarrhea; my husband does not. I don’t know if the other in-laws are affected, because if I asked, it would get back to her. I suspect that my mother-in-law is putting something in my food or drink.

Then the chaser.

You had suggested swapping plates with my husband to see if my mother-in-law would react. However, as you noted, that would have required bringing my husband into my confidence. I did not feel it was wise to do that, because he already didn’t believe that his mother treated me badly.

Quantum Physics for Babies and Rocket Science for Babies are the kind of board books you’d find on a toddler’s shelf. They have stiff, tear-proof cardboard pages, simple illustrations, and minimal text. But they actually explain the subjects on a (very) high level. The author, Chris Ferrie, is a physicist and Senior Lecturer for Quantum Software and Information at the University of Technology Sydney.

I finally learned why quantum physics is called quantum physics! And even though I know how a wing moving through air goes up, the rocket science book reinforced the concept for me.

These books will be entertaining for kids age 2 and up, but the concepts, even though clearly and simply presented, are better suited for readers from age 5-105. Read the rest

This is what happiness and best-friends-forever friendship looks like. Read the rest

I've really been enjoying the new 'MythBusters Jr', Adam Savage's new science exploration show featuring... kids. Really smart awesome talented kids.

Adam Savage will be Tweeting live during tonight's two premiere episodes, and they start airing an hour early (at 8 pm ET) for parents with wee ones. Read the rest

Baby Ryan doing manly things. Yes, please. Read the rest

'Bobs Burgers' fans and stitching crafters, get ready to flip out. Read the rest

Even as an adult, I am entirely confused by cousin relationships beyond "first." This chart is very helpful though it lacks the category of "kissing cousin."

(via r/mildlyinteresting) Read the rest

Kano is a Raspberry Pi based computer system. It comes with everything you need besides an HDMI monitor. I love the keyboard with the included trackpad. At this sale price, it's probably cheaper than separately buying a Raspberry Pi, a microSD card, a case, a keyboard and pointer, a power supply, and cables. Plus, Kano's Linux OS is packed with fun goodies.

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When Trevor Noah brought The Daily Show to his South African home to celebrate what would have been Nelson Mandela's 100th birthday, he stopped by his childhood neighborhood to visit with his 91-year-old grandmother. Her memories of what it was like to live under apartheid is both shocking and heartbreaking. Read the rest

Patrick Costello (previously) writes, "My mom shares her recipe for cranberry orange bread with help from my dad. They have been married for fifty years and they are still crazy for each other. The full recipe is in the video description." Read the rest

French illustrator Linda Bouderbala did a fun exercise where she gathered some of her favorite characters from geek and pop culture and organized them by color. Read the rest

Raising baby corals is a labor-intensive process that requires gathering the babies at the moment the corals spawn in the wild. Scientists compete with fish that feast on the babies, netting the gametes and planulae, then caring for them in a lab until they can be planted on the ocean floor. Read the rest

Jay Harrison shared this delightful lithophone cover of Vulfpeck's "It Gets Funkier III" at the Parabola Arts Centre as part of Cheltenham Music Festival. Read the rest

Most aquatic animals propel themselves with a tail or fluke, so roboticists have long been interested in the remarkable speeds possible by mimicking sea lion propulsion with front flippers. Read the rest

Brian McManus looks at the engineering challenges behind the Curiosity's thin aluminum wheels, which are sustaining significant damage on the Martian surface. Read the rest

Photographer and mom Samantha, aka Roaming Magnolias, shared this incredible gallery of photos on Reddit/IMGUR today. One of her sons is autistic and hates being photographed. His sibling does not mind it. Mom's creative parenting solution, and some amazing images, below. Read the rest

Adrien Manduit (previously) returns with a breathtaking timelapse of galaxies as viewed from Teneriffe. Read the rest