Astronomy

• The axial tilt and speed of planetary rotation.

Biology

• Opalescent nudibranchs exist.

Programming

• How to create conditional view modifiers in SwiftUI.

Physics

• Clocks create entropy.

Biology

• Zebra stripes are white (not black).

Programming

• How to tokenize natural language with Swift.
• How to debug Lua code.

Baking

• The temperature of the dough has an effect on the final outcome (thanks to @dimsumthinking)

Astronomy

• Stars in the Milky Way could be made up of antimatter.

Biology / Medicine

• The difference between fish and krill oil.

Programming

• How to handle command-line arguments in GO.
• How to dynamically generate forms in Swift driven by a data file.

Astronomy

• Stars have a characteristic known as "squishiness".

Programming

• How to unit test Codea code.

Writing

• "Forty" is the only number spelled with letters in alphabetical order.

Astronomy

• The rings of Saturn are larger than I thought.

Biology / Perception

• How we know whether and when we need to pay attention.

Astronomy

• NASA generates 5g of oxygen on Mars.

Writing

• The words "but" and "unless" make the phrase that comes immediately after them the most important part of the sentence.

Biology

• Rabbits can swim. I knew they could, but never knew they could swim this well.

Writing / Apps

• I discovered there is a portable app for writers. Sigil - eBook editor.

Programming / SwiftUI

• I learned how to create a circular progress view similar to the Activity view on the watch.

Lego / Math

• You can create a Moebius strip out of Legos®.

Writing / Vocabulary

• Frisson

Biology

• Scientists have converted spiderwebs into sound.

Astronomy

• Scientists detect precursors of life on Venus.

Astronomy

• New Horizons craft images Voyager 1.

Writing / Language

• E-Prime, English without words for "to be" which cause people to identify with what is said about them.

Geology / Vulcanism

• Blue lava exists.

Physics

• Ship displacement nomogram.

Time / Perception

Biology

Physics / Math

Books / Reading

Books / Writing

Astronomy

Mechanics / Math / Synchronization

Programming

Food / Cooking

Biology / Math

Psychology

Food

• Fruit sandwiches exist.

Geology

• Volcanos can be beautiful.
• Volcanos can be scary.

BIology

• Some sea snails create shells made out of metal.

Writing

• I'm awful at writing emotions. I need to work on this.

Archaeology

• A vast Egyptian city was discovered by archaeologists. They believe it's Luxor (not the on in Las Vegas).

Astronomy

• NASA released a picture of "blue" (false image) dunes on Mars.

Writing

• Writers are told/taught to use active voice when writing. Many things in life occur to people through no action of their own. Sometimes, a person is a passive recipient of an action. The best way to describe this is by using passive voice. I'm not going to avoid using passive voice where passive voice is what is required.

Writing

• Apparently, some authors cross out their signature when signing books. I don't get it: none of the reasons in this article make sense.

Dinosaurs

• Tyrannosaurus is chronologically closer to an iPhone than it is to a Stegosaurus.
• A feather attached to dinosaur skin has been discovered preserved in amber.

Physics

• There have been some weird observations that may point to new things in physics.

Writing / Grammar

• How to pronounce the "ae" diphthong.

Miscellaneous

• "Seinfeld"'s hallway can't exist.

Writing / Vocabulary

• A cagoule is rainware.

• Most people know the meaning of the word hare, the animal. How many know hare also means to move quickly?

Biology/Oceanography

Life

• When someone disagrees with you, it's not your job to convince them otherwise. It is often better to ignore them.

Humor

• I learned someone took "dance on my grave" literally.

Programming

• I learned how to read numbers into an array in GO.
• I learned how to inject source code into Lua

Programming / SwiftUI

• I learned how to make my own property wrappers in SwiftUI. Thanks to @dimsumthinking.

Entertainment

• C3PO and R2D2 appeared in "Raiders of the Lost Arc"

Astronomy / Geology

• Earth's core has 5 layers.

Miscellaneous

• How to brew hard cider. It’s turns out to be the easiest form of brewing a beverage.

Oceanography

• I got a better sense of how deep the ocean really is. I knew it was deep, but not what that really means.

Programming

• How to use a basic @ViewBuilder in SwiftUI which lets me use switch statements.

Writing

• The origin of the word "poet".
• Not to edit someone's work as if it were my own.

Astronomy

• Why humans chose certain stars for constellations.

Physics / Geology

• Scientists have created a substance harder than a diamond. Mohs the merrier, I say…

Programming

• I'm dipping my toe back into SwiftUI. I think this year's WWDC is going to make using SwiftUI more mandatory. I learned how to do basic transitions in SwiftUI. Hacking With Swift is a great resource, but I already knew that.

Animals

• Reindeer cyclones exist. It's a way of protecting the individual in a herd. This is reminiscent of the U.S's "circling the wagons" in the old west.
• Otters rub their cheeks to groom.