How the lead industry lied to the public for decades - Gerald Markowitz and David Rosner
Learning Stats
CEFR 等级
Total Words
Unique Words
难度
字幕 (83 segments)
DownloadIn the 1970s, pediatrician Herbert Needleman and colleagues
collected and analyzed the baby teeth of schoolchildren
across Boston and Philadelphia in return for small rewards.
But their so-called “Tooth Fairy Project” confirmed a dark reality:
many kids had been exposed to lead.
Lead is a metallic element that's distributed across Earth's crust.
When it enters the human body,
it can disrupt many critical processes that span various systems,
producing a diverse set of symptoms.
Full subtitles available in the video player
Key Vocabulary (23)
People refers to a group of human beings or the general public. It is the standard plural form of the word 'person'.
To put or place something in a specific position or location. It also means to adjust or prepare something so that it is ready for use, such as a clock or a table.
To go in front of a group of people to show them the way to a place. It also means to be in control of a group, a team, or an activity.
Children is the plural form of 'child,' referring to more than one young human being below the age of adulthood. It is used to describe a person's offspring or a group of young people in general.
H2O liquid
"Drink water daily."
The whole physical structure of a person or animal, including the bones, skin, and internal organs. It is used to describe the entire physical being of a living or deceased entity.
Health refers to the state of being free from illness or injury, encompassing physical, mental, and social well-being. It is used to describe how well a person's body or mind is functioning overall.
Relating to the way a person or animal acts or behaves in different situations. It describes actions that can be seen and measured rather than just thoughts or feelings.
"Behavioral psychology studies actions."
To stop something from happening in the normal way or to cause a problem that interrupts a process. It is often used when an event or a system is forced to change its usual flow.
"The protest disrupted traffic."
Small describes something that is not large in size, amount, or degree. It is a basic word used to compare the dimensions of objects or the scale of events.
"We live in a small house near the beach."
As an adjective or noun adjunct, it describes something relating to, consisting of, or conveying the life-sustaining fluid in the body. It is frequently used to specify medical tests, familial relationships, or physiological functions.
A baby is a very young human being, typically from birth until they start to walk. It is a general term for an infant who requires complete care and attention from adults.
"The baby is important."
Paint is a colored liquid that you put on a surface such as a wall, door, or piece of furniture. It dries to form a thin, hard, colored layer that protects or decorates the surface.
"The paint is important."
Exposure is when something is shown to the public or allowed to be seen. In art and photography, it also refers to the amount of light that reaches a camera sensor or film.
Grammar in This Video
"Lead can also cross the blood-brain barrier."
"Lead is a metallic element that's distributed across Earth's crust."
"children’s bodies are smaller and still developing."
"many kids had been exposed to lead."
"No level of lead exposure is considered safe."
"many kids had been exposed to lead... lead exposure can also cause"
"Yet, despite the long-known health risks, lead became incredibly popular"
"This is because the body tends to falsely recognize lead"
"For example, lead can disrupt the synthesis of hemoglobin"
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