How The Modern World Tricks Our Bodies Into Hurting Themselves
To learn more about this topic, start your googling with these keywords:
Cyclooxygenase: An enzyme responsible for the production of thromboxane and prostaglandins.
Thromboxane: A lipid that acts as a platelet aggregator.
Platelets: Special non-nucleic blood cells that clump together to cause blood clots.
Prostaglandins: A lipid that causes vasodilation and inflammation.
Aspirin: A form of acetylsalicylic acid that acts as an NSAID.
NSAIDs: Non-steroidal Anti-Inflammatory Drugs that inhibit COX, and thus inflammation and clotting.
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3:39
Why Exercise Is Hard
To learn more about this topic, start your googling with these keywords:
Physical activity - any bodily movement produced by the contraction of skeletal muscle that increases energy expenditure above a basal level
Exercise - a form of physical activity that is planned, structured, repetitive, and performed (primarily) with the goal of improving health or fitness
Recommended levels of physical activity (USA) - 150 minutes moderate-intensity or 75 minutes vigorous-intensity aerobic physical activity per week, or an equivalent combination, and muscle-strengthening activities at least 2 days / week
Evolutionary medicine - a field that uses evolutionary theory & data to better understand (the origins of) health & disease
Mismatch conditions - health conditions that are more prevalent or severe today than in the past because the body is inadequately or insufficiently adapted to modern environmental conditions (likely including: cavities, type 2 diabetes, heart disease, osteoporosis)
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4:04
The Secret Global Sewer System
To learn more about this topic, start your googling with these keywords:
Waterlog - to saturate (a field) with water; a problem for most crops
Drainage - the removal of liquid (water) from an area
Ditch - a narrow channel dug in the ground, typically used for drainage alongside a road or the edge of a field
Drain tile - a pipe buried (beneath a field) for drainage. Originally made of ceramic tiles, now typically of corrugated plastic
Precision agriculture - putting corn seed + small dose of fertilizer/pesticides in hole in ground
Controlled drainage - the use of a water control structure to raise the depth of a drain tile outlet to hold water in the field when drainage isn't needed
Wood chip bioreactor - an underground trench filled with wood chips that provide carbon for bacteria that denitrify the water flowing through it
Saturated buffer - a strip on the edge of a field filled with plants & bacteria that can remove some nitrogen from the water flowing onto it from drain tiles
Denitrification - the removal of nitrogen from a substance (soil, air, or water) by chemical reduction, typically via bacteria
Wetland - an area of land where water covers the soil year-round or at certain times of year
Ecosystem services - the free benefits humans get from natural ecosystems
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3:52
Keeled dragons
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1:16
Four-limbed dragons
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From the creators of the popular science show with millions of YouTube subscribers comes the MinuteEarth podcast. Every episode of the show dives deep into a science question you might not even know you had - but once you hear the answer, you’ll want to share it with everyone you know. Our team of scientists digs into the research and breaks it down into a short, entertaining explanation jam-packed with science facts and terrible puns. We’ll tell the incredible story of how monkeys crossed the Atlantic ocean on natural rafts, and we’ll explain why it gets hotter the deeper you dig underground.
Colombia