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For more on population trends, we're joined once again by Professor Wu Xu from Arizona State University. Hello, Professor Wu.
Q1: Many poor countries are experiencing high population growth rates, despite having a less developed economy. But the opposite is true for richer nations, where many developed countries are seeing declining populations. What can governments do to meet their demographic challenges?
Q2: Climate change and new diseases are serious challenges for both rich and poor nations. How can governments, and ordinary citizens, protect the environment, while still maintaining a healthy, modern lifestyle?
Thanks. That was Professor Wu Xu from Arizona State University.