1) The development and adoption of renewable energy sources, such as solar and wind power, have contributed to the transition to cleaner and more sustainable energy systems, reducing reliance on fossil fuels and mitigating climate change impacts.

2) The role of the media in politics is to provide information, analysis, and scrutiny of government actions, policies, and public affairs, serving as a watchdog and facilitating public discourse and transparency.

3) The Great Wall of China is not visible from space without aid, contrary to popular belief.

4) The term "bull market" refers to a period of rising stock prices, while a "bear market" refers to a period of falling stock prices.