Essence of linear algebra - "[Grant Sanderson of 3Blue1Brown (now at Khan Academy) animates] the geometric intuitions underlying linear algebra, making the many matrix and vector operations feel less arbitrary." [more inside]
Understanding e to the pi i - "An intuitive explanation as to why e to the pi i equals -1 without a hint of calculus. This is not your usual Taylor series nonsense." (via via; reddit; previously) [more inside]
The Point! (1971) is the animated TV adaptation of singer/songwriter Harry Nilsson's fable about a boy named Oblio, the only round-headed person in the Pointed Village, where by law everyone and everything had to have a point. Despite his round head, Oblio has many friends. But an evil count, jealous that Oblio is more popular than his own son, says that without a pointed head, Oblio is an outlaw. Along with his faithful dog Arrow, Oblio is exiled to the Pointless Forest. There, he has many fantastic experiences (including encounters with a 3-headed man, giant bees, a tree in the leaf-selling business, and a good-humored old rock). From his adventures, Oblio learns that it is not at all necessary to be pointed to have a point in life. Directed by Fred Wolf and narrated by Ringo Starr, the film features all the original songs from Nilsson's album of the same name. [more inside]
Play Pen - It's a Wiki-based pixel-art user-created point-and-click freeform adventure game/story/experience. Look, just go there and do something.
Hetherdale is a full scale point and click adventure, for free. Don't forget to use the map option when it arrives in order to travel faster.
Once upon a time in the town of Point, everything - all the buildings, trees, and even the people were pointed. Except for one little round-headed kid named Oblio. "I was on acid and I looked at the trees and I realized that they all came to points, and the little branches came to points, and the houses came to point. I thought, 'Oh! Everything has a point, and if it doesn't, then there's a point to it.'" – Harry Nilsson" [more inside]
Hanamushi has been mentioned previously, but the artist's site has been redone as part portfolio - part surreal point-n-click adventure.
Wake Up, Freak Out - then Get a Grip, an 11-minute animated film about climate change by activist Leo Murray, complete with script with references
No curve Flash Friday: Click Maze
There has been a measurable "surge" of carbon in the atmosphere for the past 4 or 5 years, nearly doubling the annual rate of the 1970-2000 period, which has mystified scientists because it does not match human trends or known natural causes. A new paper (abstract) suggests we may have reached a tipping point with more greenhouse gases escaping from trees, plants and soils than in the past - hotter and dryer weather caused by high levels of CO2 is creating a feedback loop of unusually strong out-gassings of CO2 from vegetation more inside
Well, here's a good Point/CounterPoint: The More Guns Bill / The Less Guns Bill. [ Courtesy of Cryptome, whence the Gilmore screed ]