Salt: a compound, a taste, a mineral, a treasure. When we’re cooking, we don’t want too much, nor too little. Wars have been fought over salt, expressions created about it (“he’s worth his salt”), and all sorts of superstitions about throwing it over your shoulder. What more do you know about our friend NaCl?

It's been a big deal for humans.

https://www.mashed.com/160965/the-untold-truth-of-salt/

https://manoa.hawaii.edu/exploringourfluidearth/chemical/chemistry-and-seawater/salty-sea/weird-science-salt-essential-life

Everyone needs salt for fluid balance, muscle and nerve function. How much do we need?

https://www.medicalnewstoday.com/articles/146677

https://www.nih.gov/news-events/nih-research-matters/how-body-regulates-salt-levels

How Salt Has Shaped Our Landscape

https://www.saltassociation.co.uk/education/physical-geography-salt-shaped-landscape/

Salar de Uyuni- the World’s Largest Salt Flat

https://en.m.wikipedia.org/wiki/Salar_de_Uyuni

https://www.atlasobscura.com/places/salar-de-uyuni-bolivian-salt-flat

Uyuni stargazing tour - Night Sky Reflections from the World's Largest Mirror

https://www.rutaverdebolivia.com/tour/uyuni-stargazing-tour/

https://science.nasa.gov/night-sky-reflections-worlds-largest-mirror

Where Does the Ocean Get its Salt?

https://www.futurelearn.com/courses/exploring-our-ocean/0/steps/730

A Luxury Salt?

https://www.dandelionchandelier.com/2019/09/15/luxury-salt/

Freshwater Is Getting Saltier, Threatening People and Wildlife

https://www.scientificamerican.com/article/freshwater-is-getting-saltier-threatening-people-and-wildlife/

The Salt Flats of Cabo Rojo, Puerto Rico

https://www.tpl.org/our-work/cabo-rojo-salt-flats

Bonneville Salt Flats, Utah: Flats are as solid as concrete, ideally suited for speed trials; several world automobile and motorcycle speed and endurance records have been established there

https://www.britannica.com/place/Bonneville-Salt-Flats

https://utah.com/bonneville-salt-flats

https://podcasts.apple.com/us/podcast/super-mario-kart-and-the-bonneville-salt-flats/id1342003491?i=1000409944879

Salinas Grandes, Argentina

https://argentina-travel-blog.sayhueque.com/salinas-grandes-salta-province/

“Man can live without gold, but he can’t live without salt”: Stuff You Should Know (Podcast)

https://www.iheart.com/podcast/105-stuff-you-should-know-26940277/episode/how-salt-works-29467958/

Why does salt make food taste better? (SciShow Video)

https://www.youtube.com/watch?v=ATrSoMlx5PE

The largest body of water in California was formed by a mistake. In 1905, the California Development Company accidentally flooded a huge depression in the Sonora Desert, creating an enormous salty lake called the Salton Sea.

https://99percentinvisible.org/episode/sea-worth-salt/

Grand Challenge: Understanding and Sustaining a Biodiverse Planet

Grand Challenge: Valuing World Cultures

ERC Grand Challenges: For project design, for inquiry, for activism