Which statement best defines a global public good and provides a relevant example related to health or the environment?

Which statement best defines a global public good and provides a relevant example related to health or the environment?

• A. They are non-excludable and rival; example: eradication of smallpox
• B. They are excludable and rival; example: biodiversity protection
• C. They are non-excludable and non-rival; example: climate stability
• D. They are exclusive private goods; example: bottled water

Answer: (C)

Global public goods are outcomes that no one can be effectively excluded from and whose use by one person does not reduce availability for others. At a global scale, this means benefits are shared across countries and generations, and no single actor can privatize access. Climate stability is a prime example. A stable climate provides benefits to people everywhere—reducing health risks, protecting agriculture, and preserving ecosystems—regardless of who takes action. You can’t block someone from benefiting from a stable climate, and one person’s increased stability doesn’t diminish another’s. Because the climate system operates across borders, its benefits are truly global, making it a classic health/environmental global public good.

Global public goods are outcomes that no one can be effectively excluded from and whose use by one person does not reduce availability for others. At a global scale, this means benefits are shared across countries and generations, and no single actor can privatize access.

Climate stability is a prime example. A stable climate provides benefits to people everywhere—reducing health risks, protecting agriculture, and preserving ecosystems—regardless of who takes action. You can’t block someone from benefiting from a stable climate, and one person’s increased stability doesn’t diminish another’s. Because the climate system operates across borders, its benefits are truly global, making it a classic health/environmental global public good.