Final answer:
One modern example of the tragedy of the commons is global climate change, where the accumulation of greenhouse gases in the atmosphere negatively affects the entire planet. Another example can be seen in the depletion of fish populations in the ocean due to overfishing.
Step-by-step explanation:
The tragedy of the commons is a concept that describes the depletion or degradation of a shared resource due to individual self-interest. One modern example of the tragedy of the commons is global climate change, where the accumulation of greenhouse gases in the atmosphere negatively affects the entire planet, but no single country has sufficient incentive to reduce their emissions. This results in a collective problem that requires collective action in order to solve. Another example can be seen in the depletion of fish populations in the ocean, where overfishing by multiple countries leads to a decline in fish stocks.