སྒྱུ་རྩལ
མཛེས་སྡུག་དང་བདེ་ཐང
བཟོ་རིག
རིག་གནས་དང་ལོ་རྒྱུས
དགའ་སྟོན
ཁོར་ཡུག
ཟས་དང་བཏུང་རྫས
ལྗང་མ་འཇོར་ལུགས
ཕྱིར་འཕྲུལ་རིག
ཚན་རིག
རྩེད་འགྲན
རིག་རྩལ
གྱོན་རུང

ཁོར་ཡུག

བིལུ་པིརིན་ཊི ༢༡༦ ཡོད • ཡན་ལག་དབྱེ་རིམ ༣

ཡན་ལག་དབྱེ་རིམ་ལྟ་བཤེར

བིལུ་པིརིན་ཊི (༢༡༦)

Making a Hammerstone — The First Tool in Human History

Making a Hammerstone — The First Tool in Human History

Mary གྱིསFI

ནགས་ཚལ

༡༨
Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity
ཉེན་ཁ་ཅན་ནང་དོན

Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity

Charlie གྱིསDE

སྒྱུ་རྩལ

༢༡
Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Charlie གྱིསDE

ཁ་དོག་རྫས

༢༣
Tyrian Purple from Murex — The Most Precious Dye in Human History

Tyrian Purple from Murex — The Most Precious Dye in Human History

Tex གྱིསFO

མདོག་རྫས་དང་ཁ་དོག

༡༧
Smelting Bog Iron in a Bloomery Furnace — From Ore to Wrought Iron
ཉེན་ཁ་ཅན་ནང་དོན

Smelting Bog Iron in a Bloomery Furnace — From Ore to Wrought Iron

Forge གྱིསNO

ཆུ་ནང་གནས

༡༨
Making Hide Glue by Boiling Rawhide Scraps — Prehistoric Collagen Adhesive

Making Hide Glue by Boiling Rawhide Scraps — Prehistoric Collagen Adhesive

Bob གྱིསBE

སྦྱར་རྫས་དང་གཡོགས་ཐལ

༢༨
Boiling Water with Hot Stones in a Bark Container — Stone Boiling

Boiling Water with Hot Stones in a Bark Container — Stone Boiling

Bob གྱིསBE

ནགས་ཚལ་ལག་ཤེས

༢༧
Building a Figure-4 Deadfall Trap — Stone Weight Trigger Mechanism

Building a Figure-4 Deadfall Trap — Stone Weight Trigger Mechanism

Bob གྱིསBE

སྔོན་ལོ

༡༧
Setting a Simple Snare Trap on a Game Trail — Cordage Loop Hunting

Setting a Simple Snare Trap on a Game Trail — Cordage Loop Hunting

Bob གྱིསBE

སྔོན་ལོ

༢༥
Drying Medicinal Herbs for Winter Storage — Preserving Nature's Pharmacy

Drying Medicinal Herbs for Winter Storage — Preserving Nature's Pharmacy

Bob གྱིསBE

དང་པོའི་སྨན

༢༢
Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Bob གྱིསBE

སྔོན་ལོ

༢༠
Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Bob གྱིསBE

Industry 2.0 — Electricity, Steel & Oil (1870)

༡༣
Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

Bob གྱིསBE

སྲོག་རྫས་རིག

༡༧
Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

Bob གྱིསBE

རྒྱ་མཚོ

༢༢
Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal
ཉེན་ཁ་ཅན་ནང་དོན

Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal

Peter གྱིསSE

རྒྱ་མཚོ

༡༩
Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter

Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter

Peter གྱིསSE

Industry 2.0 — Electricity, Steel & Oil (1870)

༡༧
Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass
ཉེན་ཁ་ཅན་ནང་དོན

Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass

Peter གྱིསSE

རྫས་རིག

༢༡
Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

Peter གྱིསSE

རྫས་རིག

༤༠
Harvesting and Preparing Wild Clay from Riverbanks

Harvesting and Preparing Wild Clay from Riverbanks

Clay གྱིསDK

ས་འདོན

༡༨
Panning Gold from Alluvial Deposits — Gravity Separation of the Noble Metal

Panning Gold from Alluvial Deposits — Gravity Separation of the Noble Metal

Peter གྱིསSE

Mineralogy

༢༥