Please reword the given text
Second, major new challenges such as climate change, population trends, instability in the financial markets, tax systems, and the degradation of natural resources and the environment all make it more difficult to achieve the goals laid down eight years ago.
On the other hand, achieving the targets set 8 years ago is even more problematic due to new important challenges such as climate change, demographic developments, instability in the finance markets, taxation systems, degradation in natural resources and the environmental framework.