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What are the biggest problems of the 21st century? Why can’t these problems be solved with nationalist politics?
According to Yuval Noah Harari, an Israeli public intellectual and author of 21 Lessons for the 21st Century, the biggest problems of the 21st century are all global in nature, and therefore, they require an international response. They are three of them: 1) the nuclear threat, 2) the climate change, and 3) the dual rise of bio- and info-tech.
Keep reading to learn about the three major 21st-century problems, according to Yuval Noah Harari.
What Are the Biggest Problems of the 21st Century?
While many people are focusing on the issues and interests of their own nations, the biggest problems of the 21st century are global, and therefore can’t be solved with nationalist approach. They are:
1) The nuclear challenge: Once nuclear power became a tool of war, the threat of war meant the possibility of massive destruction. This threat was front-of-mind during the Cold War, so America, Europe, China, and the Soviet Union significantly changed geopolitical dynamics in order to avoid massive killing and nuclear annihilation. As a result, all war has declined—but with Brexit, the United Kingdom threatens this balance by abandoning the European Union and isolating itself in nationalism. The loss of multinational cooperation and the rise in nationalism could lead to war and nuclear devastation.
2) The ecological challenge: In recent decades, humans have accelerated the pace of environmental degradation. As a result, climate change threatens to make many plants and animals extinct, destroy ecological systems, cause more severe weather, hurt agricultural production, and make large areas of the globe uninhabitable. If humans don’t significantly change their behavior soon, environmental decline will reach a tipping point from which there’s no return.
While individual nations can overhaul environmental practices, raise taxes on emissions, and develop eco-friendly technologies, the effort won’t be enough unless the whole world participates. Further complicating the matter is the fact that some countries have more incentive to reform than others: Some nations’ economies rely on exporting fossil fuels, while others would gladly stop importing those fuels if a more affordable alternative existed. Additionally, climate change threatens to flood some nations with rising sea levels, while geological changes could actually benefit other nations. And since the effects of climate change are long-term (though looming increasingly imminently), it’s difficult for some countries to prioritize green policies over the short-term economic pains of reform.
3) The technological challenge: The simultaneous rise of both infotech and biotech threatens to transform the economy, labor market, social and political power, and even the biological makeup of humans. A nationalist viewpoint simply doesn’t think big enough to take on such a wide-reaching issue. Like climate change, if the United States imposes policies restricting certain technological development, those laws don’t prevent China from pursuing research—and when the U.S. and other countries see China developing new technologies, they’ll be likely to do the same to avoid being left behind in a competitive, nationalistic world. Additionally, whereas people can universally agree that global warming and nuclear destruction are bad, there are a wide range of opinions on the ethics of technological developments in AI and bioengineering, which would lead to different guidelines in each country. In order to avoid a dangerous snowball of technological development, nations need to reach an international agreement on ethical guidelines to guide technological innovation and adoption.
Tackle Challenges as a Global Community
Each of these three challenges individually threatens devastation—and, taken together, each one exacerbates the others, creating a vicious cycle. As climate change increases the frequency of severe weather, leads to food shortages, and puts people out of their homes, technological development is likely to accelerate in a desperate search for solutions. As technological development progresses, increasing tension and competition among nations could raise the likelihood of nuclear war. Growing tensions or an all-out war will make it all but impossible to work together to combat climate change or create guidelines for limiting the development of AI.
Since the problems of the 21st century are all global in nature, it makes no sense to address them with nationalist politics. Just as tribes merged into nations in order to tackle issues that were too big for a single tribe, nations now need to merge to tackle these problems that are too big for any individual country to solve. This doesn’t mean that you can’t be patriotic, maintain cultural traditions, and uphold your national identity. However, in doing so, you must also consider the best interest of the global community—because the global nature of these problems means that whatever is in the best interest of the world is also in the best interest of each nation.

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