Much more than you wanted to know about lentils. Inspired by CGP Grey (although nowhere near as cool yet). Let's explore!
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Image Credits:

Lentils!: CC BY-SA 2.0, commons.wikimedia.org/w/index.php?curid=425642

Dhall: By Rydia~commonswiki - Own work, CC BY-SA 2.5, commons.wikimedia.org/w/index.php?curid=782178

1st: By Oldbeeg - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=33543486

Of the Bushy Plant: CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=309180

Boiled to Eat: By Dmitry Bagrov - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=77057919

Pulses, or Legumes: By Pierre André Leclercq - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=86608528

Peas: By Bill Ebbesen - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=15727721

Beans: By Tiia Monto - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=47484249

By themselves: By Tiia Monto - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=73444625

In stews and soups: By TheGirlsNY - originally posted to Flickr as Lentil soup, CC BY-SA 2.0, commons.wikimedia.org/w/index.php?curid=6214226

Cotechino Sausages: By J.P.Lon - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=2066977

Coins: By Portable Antiquities Scheme from London, England - Close up of the coin hoard, CC BY-SA 2.0, commons.wikimedia.org/w/index.php?curid=10842324

Kushari: By Dina Said - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=36970202

South Asia: By GFDL, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=85536487

A type of Dal: By jasleen_kaur from USA - mixed dal, CC BY-SA 2.0, commons.wikimedia.org/w/index.php?curid=41140241

Wild relatives: By ChriKo - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=31769805

Middle East: By This W3C-unspecified vector image was created with Inkscape. The map has been created with the Generic Mapping Tools: gmt.soest.hawaii.edu/ using one or more of these public-domain datasets for the relief: ETOPO2 (topography/bathymetry): www.ngdc.noaa.gov/mgg/global/global.html GLOBE (topography): www.ngdc.noaa.gov/mgg/topo/gltiles.html SRTM (topography): www2.jpl.nasa.gov/srtm/ - en.wikipedia.org/wiki/Middle_East#/media/File:Midd…, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=87945656

Cultivated Lentils: By Benjamint444 - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=5711945

Eating Lentils: fritish License CC by-nc-sa 2.0 search.creativecommons.org/photos/eeff2d80-ba37-4a…

Today: By Kenny Sing/Elegant Themes, derivative work andrybak - This file was derived from: Line-style-icons-calendar.svg, GPL, commons.wikimedia.org/w/index.php?curid=87253444

Canada: By derivative work: Yug (talk)Canada_(geolocalisation).svg: STyx - Canada_(geolocalisation).svg, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=4398705

Saskatchewan: By TUBS - Own workThis W3C-unspecified vector image was created with Adobe Illustrator.This file was uploaded with Commonist.This vector image includes elements that have been taken or adapted from this file: Canada location map.svg (by Yug)., CC BY-SA 2.5, commons.wikimedia.org/w/index.php?curid=15951638

Two Million Tons: By Shijan Kaakkara - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=62799343

Lentil production stats are in metrtic tons

Madhya Pradesh: By TUBS - Own workThis W3C-unspecified vector image was created with Adobe Illustrator.This file was uploaded with Commonist.This vector image includes elements that have been taken or adapted from this file: India location map.svg (by Uwe Dedering)., CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=16494841

Uttar Pradesh: as above: commons.wikimedia.org/w/index.php?curid=16495007

Burning Glass: CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=169723

Nimrud Lens: By Geni - Photo by user:geni, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=13302965

Camera lens: By Dmitry Makeev - Own work (Private collection), CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=78101256

Spiral Galaxy (Andromeda): By Kanwar Singh - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=51044879

NGC 3945: By Judy Schmidt from Fresh Meadows, NY, USA - NGC 3945, CC BY 2.0, commons.wikimedia.org/w/index.php?curid=31521815

A Gigantic Lentil: By Stefan Steinbauer from Vienna, Austria - Beluga lentils, CC BY 2.0, commons.wikimedia.org/w/index.php?curid=38009441