There are 118 elements on the periodic table, but it seems like only a handful of them get any attention. But just because you haven't heard of an element doesn't mean that it isn't a vital part of everyday life.

Hosted by: Michael Aranda
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http://pubs.acs.org/doi/abs/10.1021/ed010p227?journalCode=jceda8
http://www.cbsnews.com/news/rare-earth-elements-not-so-rare-after-all/
http://chemistry.tutorcircle.com/inorganic-chemistry/lanthanides.html
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3601293/
http://chemistry.tutorcircle.com/inorganic-chemistry/lanthanides.html
http://avalonadvancedmaterials.com/rare_metals/praseodymium/
http://www.springer.com/cda/content/document/cda_downloaddocument/9783642354571-c2.pdf?SGWID=0-0-45-1379023-p174751778
https://pubs.usgs.gov/of/2013/1072/OFR2013-1072.pdf
http://avalonadvancedmaterials.com/rare_metals/praseodymium/
www.ncbi.nlm.nih.gov/pmc/articles/PMC3601293/
www.lipmann.co.uk/metals-traded/praseodymium/
www.britannica.com/science/neodymium
www.azom.com/article.aspx?ArticleID=1595
http://mineralseducationcoalition.org/elements/neodymium/
www.radiochemistry.org/periodictable/la_series/L8.html
www.reuters.com/article/us-mining-toyota-idUSTRE57U02B20090831
www.frontierrareearths.com/demand-for-neodymium-from-wind-turbines/
www.mediacollege.com/audio/microphones/dynamic.html
www.ndfeb-info.com/neodymium_magnets_made.aspx
www.slate.com/articles/health_and_science/elements/features/2010/blogging_the_periodic_table/ytterby_the_tiny_swedish_island_that_gave_the_periodic_table_four_different_elements.html
https://books.google.com/books?id=yb9xTj72vNAC&pg=PA121
http://online.liebertpub.com/doi/abs/10.1089/pho.2008.2327
www.lsptechnologies.com/why-laser-peen.php
https://books.google.com/books?id=eV7o7F2MYUUC&pg=PA340
www.ch.ic.ac.uk/rzepa/mim/century/html/ybco.htm
www.chemistryworld.com/podcasts/ybco-yttrium-barium-copper-oxide/6148.article
www.rsc.org/periodic-table/element/39/yttrium
www.chemistryexplained.com/elements/T-Z/Yttrium.html
http://cornerstone.lib.mnsu.edu/cgi/viewcontent.cgi?article=1345&context=etds
http://self.gutenberg.org/articles/eng/Californium
www.wolframalpha.com/input/?i=half-life+of+americium-241
www.wolframalpha.com/input/?i=number+of+atoms+in+1+microgram+of+americium-241
http://www.wolframalpha.com/input/?i=(2.498*10%5E15)*(1-Exp%5B-(5.081*10%5E-11)*(10%5E0)%5D)
www.wolframalpha.com/input/?i=(2.498*10%5E15)*(1-Exp%5B-(5.081*10%5E-11)*(10%5E1)%5D)
www.world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/smoke-detectors-and-americium.aspx
www.nrc.gov/materials/miau/industrial-uses/well-toolkit.html
www.nrc.gov/materials/miau/industrial.html
www.azosensors.com/article.aspx?ArticleID=389
www.kau.edu.sa/files/320/researches/47387_18847.pdf
www.lenntech.com/periodic/elements/cf.htm
http://ucmanagedrought.ucdavis.edu/PDF/DROUGHT_WEB_NEUTRON_PRB.pdf
www.google.com/patents/US4766319
https://books.google.com/books?id=v607AgAAQBAJ&pg=PA216
www.frontier-cf252.com/facts.html
www.in.gov/indot/files/Earthworks_Chapter_12.pdf
www.apnga.com/industry-info/gauge-basics/
www.kam.com/documents/2015/02/white-paper-determining-moisture-content-crude-oil.pdf
www.google.com/patents/US3640888
www.onepetro.org/conference-paper/SPWLA-1969-P
chemistry.about.com/od/elementfacts/f/densest-element.htm
education.jlab.org/itselemental/ele076.html
www.technology.matthey.com/article/39/4/164-164
www.rsc.org/periodic-table/element/82/lead
theodoregray.com/periodictable/Elements/076/index.html
www.ebay.com/gds/A-PHONOGRAPH-NEEDLE-REPLACEMENT-GUIDE-RECORD-PLAYERS-/10000000000942923/g.html
books.google.com/books?id=yb9xTj72vNAC&pg=PA15
pro.tanaka.co.jp/en/library/element/column08/
www.livescience.com/39142-osmium.html
www.tandfonline.com/doi/abs/10.3109/10520290903462838
www.nibs.com/article4.html
www.smallprecisiontools.com/products-and-solutions/chip-bonding-tools/wedge-bonding-tools/microloy-osmium-carbide-alloy/advantages-of-microloy-osmium-carbide-alloy/?oid=900&lang=en
http://pubs.usgs.gov/of/2003/of03-019/of03-019.pdf
www.syvum.com/cgi/online/serve.cgi/squizzes/chem/periodic1b.html
https://books.google.com/books?id=P_Ixuott4doC&pg=PA241
www.usantimony.com/flame_theory.htm
https://books.google.com/books?id=BUfYWcxFim0C&pg=PA19
www.radiochemistry.org/periodictable/la_series/L8.html
www.livescience.com/39074-what-is-an-mri.html
www.insideradiology.com.au/gadolinium-contrast-medium/
https://books.google.com/books?id=Ik9ECwAAQBAJ&pg=PA100
https://books.google.com/books?id=xpCffxNrCXYC&pg=PA13
http://mri-q.com/uploads/3/4/5/7/34572113/lauffer_1999_review.pdf
http://scitation.aip.org/content/aapm/journal/medphys/19/3/10.1118/1.596817
http://io9.gizmodo.com/hold-this-magnet-in-your-hand-and-it-stops-being-a-magn-1730030822
http://mriquestions.com/why-gadolinium.html
www.chemistryexplained.com/elements/C-K/Gadolinium.html