Investigating the World's Elements | BBC Earth Science

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From the secret history of your gold jewellery to nitrogen’s role in the First World War, there’s so much more to elements than knowing your periodic table. But what happens when these resources are manipulated or run out for good?

Source:
47:00 - American Geophysical Union 2017
48:30 - Environmental Science and Technology 2019

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When I was at school (a very long time ago) I hated chemistry with a passion. I didn't understand it and didn't particularly want to because it bored me rigid. I am not sure how I stumbled upon this video or even why I started watching it but I am so glad I did as it explains science in a way that even a dunce like me can understand. Great work and I just wish I had been taught like this all those years ago.

FergyGuitar
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audio normalization, how hard could it be.

snasturbate
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The answer is LFTS. Liquid Fluride Thorium Salt Reactors. Proven, as fail safe as can be, cheap and inexhaustible. The oak ridge labs ran a LFTS reactor for years. It was cancelled because, a: it didn't make weapons grade material, and b: There is no big money in it. It is virtually free.

csbrudy
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How about properties, resources, extraction and usage of Lanthanides as well as Actanides?

kisho
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Hydrogen will not be the solution to the world's energy. If you burn it in air, the temperature is high enough to convert N2 to NOx, that is H2 engines still pollute. If you use it in fuel cells, the energy is clean, but hard to store. Liquid H2 requires temps way colder than LN2 and requires energy to produce as well as store. If you try to store it compressed, tanks up to 10, 000 PSI are used, and the energy density doesn't come close to gasoline (it doesn't in liquid form either BTW). Waiting around for fusion is not happening anytime soon. Our best bet is to keep building out anything other than carbon-based sources (nuclear, solar, etc) and keep in mind the non-nuclear will require backup. These pipe dreams sway public opinion easily, and though the research is worth pursuing it should not be thought of as "the" solution.

LFTRnow
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when 2 neutronstars collided in 2017 they made 3 earth masses of gold thats insane

sewthuis
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The biggest benefit of mining (and manufacturing, farming, etc) in space is that you can pollute to your hearts content. Space is big and will likely take literal aeons before we even worry about it, if at all.

FA-ftsq
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Very informative ❤ lovely to know so many knowledgeable. I share the link with many children I know so that they can learn something from it ❤

SnapshotSU
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The total amount of all money ever issued in history including the value of all gold ever produced can be writen down on piece of paper in a single sentence

renerene
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Tuning out within the first few minutes. I thought i was going to learn some things about the periodic table of elements, but this seems to be nothing more than another lecture designed to make me feel guilty.

mikebetts
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Haa Haa😹 it’s good to see regular channels get context labels too. Congratulations 🥳

NGC-catseye
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❤ gold reacts with two acids in mixture and is DISSOLVED by them. It isn't the most inert element in the universe.

richardbennett
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Does this mean that when I clean my cat’s toilet, I should put the contents into my plants?

daveking
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Wowzer a major problem that I knew little abou

rwm
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That thumbnail represents the elusive roulette spin you never win in Gran Turismo 7 😂

bwest
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I think this may be outdated don't they know now that supernova do not generate the energy to make gold and then it actually it was the collision of two neutron stars

MarcWatt-rx
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The commonality of posing speculative ideas as well known facts in a supposed attempt to seem intelligent is startling. They were up to the task.

markkosloski
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I saw those gold bars and I thought this was about Bob Menendez.

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Excellent video! For those who are interested in Nitrogen issues, specially its agricultural uses, please study the life and contributions of Johanna Döbereiner!

ingoise
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Nine countries possess nuclear weapons:NOT SIX.

tonyhawthorne