Heavy picture hangar drywall anchors

https://youtu.be/WFAOxhKARvA?si=s6qujLQ919peisNl

Cow burps are a climate problem. Can seaweed help?

2:22 adding red seaweed to cow feed can reduce methane emission by 90%

https://youtu.be/oRUjKZOhV6E?si=wYlaXy2SIIalNXJC

Dede Allen - pioneering film editor who invented "pre-lapping"

https://youtu.be/Xeacbs1voBU?si=NTkB2rVz_c4s6Tnf

"She was the first editor to receive a solo title card in the opening credits to a film, for Bonnie and Clyde (1967)..."

"Dede was the first to obtain "points" for the film editor in profit distribution..."

"She pioneered the "L cut," also known as pre-lapping, which is when the dialog of the incoming scene begins before the picture transitions into that scene." 

How birds achieve lift.

Here are some cool videos about how a bird achieves lift. My favorite is the owl flying through helium bubbles. 

  https://youtu.be/4jKokxPRtck?si=Ok5H7ZL-PjC6zRR0 

  https://youtu.be/2sh8_3-R90I?si=qZ6HMriBkVo2WqZc 

  https://youtu.be/uAIZrRAR31Y?si=-tLBRwCym6gdK2q6

Effective altruism

This certainly sounded commendable at first blush, but a deeper dive exposes just how difficult a problem this is. 

Effective altruism has its pitfalls, since it's hard to define what you're optimizing for in creating the "greatest good." That is, if you optimize for preventing malaria, you don't help starvation, and vice versa.

 https://www.vox.com/future-perfect/23564571/effective-altruism-sam-bankman-fried-holden-karnofsky-ai

Perhaps "voluntary associations" are better. 

https://www.city-journal.org/article/good-riddance-to-effective-altruism

For instance, "Choice Humanitarian" aims to find and train good local leaders first, who are free from corruption, and then implement projects that improve quality of life. They "assess the context of the situation, identify the resources needed, execute the work, and monitor and evaluate progress." 

Lifetime greenhouse gas emissions of electric vs ICE vehicle

• It takes a typical EV about one year in operation to achieve "carbon parity" with an ICE vehicle.
• If the EV draws electricity from a coal/fired grid, however, the catchup period stretches to more than five years.
• If the grid is powered by carbon/free hydroelectricity, the catchup period is about six months.

Lifetime emissions have to factor in the source of electricity used for (both making and running) the electric vehicle; if coal-fired plants are used, it takes longer for the electric vehicle to reach parity with internal combustion vehicles. But eventually, the high environmental cost of producing electric vehicles is outweighed by the lower environmental cost of running the vehicle. 

A big contributor to the energy needs in lithium battery production is reducing the humidity to <1% because lithium is so very reactive with water. 

https://youtube.com/shorts/Dkp8Wm3PtTY?si=dupUoGloosop2ao1

Graphics and quotation from  https://www.cotes.com/blog/greenhouse-gas-emissions-from-ev-vs-ice-vehicles

https://www.abc.net.au/news/2024-05-27/comparing-electric-cars-and-petrol-cars/103746132

A fair shake for honey bees

https://youtu.be/69Do8tw_xy0?si=5dirAVZXsRMnXvmf

This reminds me of spy vs spy - escalating countermeasures. How unusual that you can count mites infecting bees by shaking powdered sugar onto them!

Nuclear is greener to build

Interesting graphic of materials needed to manage energy generation from various sources. 

https://twitter.com/NuclearHazelnut/status/1716142995899142259?t=e6DY6b417fSInrVlBbVqqA&s=19

More than you ever wanted to know about foam

https://youtu.be/2KhKlHNlP4Y?si=ujd3ZbaALP89BNcE

I found this a lot more interesting than I expected. 

Lots of definitions, innovations, and variations. 

Make rice crispies at home

https://youtu.be/Jq_zFo2v_XQ?si=q23rmZwpWicHK_mN

Cool! - make healthier rice crispies yourself at home. Cook them with black salt, and use a sieve to retrieve the salt and catch the rice crispies before they burn. Start watching at 5:48 (he's very talkative.) 

Changing a tire by hand with a wire rope.

https://youtu.be/ooZePMY2EAQ?si=hJjmkwYAGlkbW2aQ

How platinum deposits form - sinker vs floater

https://youtu.be/mEWKXFvczCo?si=0VwKRKv-bxCyq12d

0:15 both Platinum and palladium are common in the earth's crust, but mines for them are rare.

1:27 there are two theories of how deposits are fomred - sinkers and floaters 

2:13 these mines have 15 to 20 g of platinum per ton of ore 

2:36 "cumulate" rocks form by density sorting

2:47 Or, crystals may form at the outer edges of a magma intrusion as the boundary layers cool

Does a passing jet increase rainfall?

I was thinking that a coalescing raindrop might absorb energy from the noise of a passing jet and drop from the sky. I don't think it can make it rain in a desert, though. 

"planes flying above clouds during precipitation events can cause far more rain or snow to fall from those clouds – totaling up to 14 times more precipitation, under the right conditions."

https://stormwater.wef.org/2019/03/passing-planes-pull-added-precipitation-from-clouds-finds-new-study/

And I would think there would be a lull in rainfall after this phenomenon had "shaken loose" a few extra raindrops, so that hourly rainfall would maintain its average. But then, rainfall is higher on the windward side of mountains, so maybe the jet passing would elicit rainfall that wouldn't otherwise fall.

US monthly cellular/Wi-Fi data usage by age 2018

https://www.statista.com/statistics/919501/average-monthly-wireless-data-usage-in-the-us-by-age/

I thought kids would use way more data because they're constantly scrolling through videos on social media... Maybe adults are too. 

Hybrid efficiency

https://youtu.be/O61WihMRdjM?si=Jz0n5IfTOTHVhG3i

1:25 in order for this engine to achieve it's 40% thermal efficiency of converting thermal to mechanical energy, it has to operate within right RPM and load ranges