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Black carbon: groups of linked carbon atoms.
Fallout: radioactive particles that are carried into the atmosphere after a nuclear explosion or accident and gradually fall back as dust or in precipitation.
Jet stream: a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth.
Radiation: the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
Weapon yield: the amount of energy released when that particular nuclear weapon is detonated, usually expressed as a TNT equivalent.
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4:57
When Tree Planting Goes Wrong
To learn more about this topic, start your googling with these keywords:
Afforestation: the process of introducing trees and tree seedlings to an area that has previously not been forested.
Carbon sequestration: a process by which carbon dioxide is removed from the atmosphere and held in solid or liquid form.
Ecological restoration: the process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed.
Moor: wet, upland habitats characterized by low-growing shrubs, grasses, bog-mosses, and damp, peaty soils.
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4:08
Which Is Worse: Underpopulation Or Overpopulation?
To learn more about this topic, start your googling with these keywords:
Overpopulation: a situation in which there are too many people for the amount of food, materials, and space available.
Underpopulation: a situation in which there are too few people to realize the economic potential of an area or support its population's standard of living.
Exponential growth: a pattern of data that shows greater increases with passing time, creating the curve of an exponential function.
Extreme poverty: an income below the international poverty line of ~$2/day
Total fertility rate: the average number of children born to each woman over her lifetime.
Population bomb: a theory that the human population would grow faster than available food supplies.
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3:29
Balsa Hardwood
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1:25
Dog Years
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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.
New Zealand