Solar-powered calculators may have familiarized a new generation with green energy. On the other hand, maybe they were just cool.

Penny Gusner is a senior insurance writer and analyst at Forbes Advisor. For more than 20 years, she has been helping consumers learn how insurance laws, data, trends, and coverages affect them. Penny ...

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This article adheres to strict editorial standards. Some or all links may be monetized. Known for his savvy investments and sharp wit, billionaire Warren Buffett is also celebrated as one of corporate ...