Humans have been modifying natural environments for millennia, leading to a deep co-evolution between social and natural systems. As a result, areas ...

Cryptocurrency relies on blockchain to verify transactions without central banks. Thousands of cryptocurrencies exist, evolving constantly with new applications. Investing in cryptocurrency could ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and educator with over ...