This Genius Magnet Stops Dangerous Leaks in Seconds!

I found the above video on Reddit (warning: NSFW word in the subreddit title) but with non-English narration. 

I then found the embedded video in likely AI-generated English.

From there I found the Magnaseal website from Neothane which had the following two video embedded.

...and...

Sadly the Neothane website doesn't list any prices just a button to request a quote. 

Other sites selling the MagnaSeal, however, suggest that it's a rather pricey item, so I don't think I'll be picking one up to demonstrate in my classroom.

All the Metals We Mined

 

Source - Visual Capitalist and USGS Mineral Commodity Summaries (2022) before that

I have a simple question about this graphic.

The iron presented is shown in weight of iron ore mined not of actual iron produced, and the rare earths are listed as "rare earth oxides", which I would also interpret as ore.

Some of the other metals seem to be presented in weight of actual metal produced (aluminum, for example, being listed as "smelted/refinery production"). 

Those quantities don't necessarily seem equivalent to me.

This Bridge Should Have Been Closed Years Before It Collapsed

The Fern Hollow Bridge collapsed on January 28, 2022.

Today's video sees Grady looking at the NTSB's report on the collapse of the bridge. 

The main issue can be mostly summarized as inspections that identified critical repair and maintenance on the bridge were ignored instead of being acted upon.

The report doesn't exactly fill me with reassurances that our infrastructure is safe for our daily use.

How to Make a Warning Last 10,000 Years

Alan Wiseman's The World Without Us has a chapter titled "Hot Legacy" that explores our efforts to create warnings that will last at least 10,000 years into the future and will tell future archeologists that the interesting stuff they've found at some of our nuclear waste repositories should not be explored.

Much of the research is being done at the Waste Isolation Pilot Project is New Mexico, USA, and it's that work that SciShow details in today's video.

I remember that the Wiseman chapter also mentioned the placement of various magnets around the site as a warning that something was at least weird in this location. The video doesn't mention that, and I'm surprised because I found that one of the more interesting ideas.