Matthew Johnston

Google (Alphabet) makes most of its money selling ad space to advertisers on its various platforms. But its cloud computing services are growing fast.

While the finite nature of Earth's resources limits the direction of economic growth, it does not mean that infinite economic growth is impossible.

With General Electric (GE) leading the pack, these are the 10 biggest renewable energy companies by 12-month trailing revenue.

Like most companies, the major U.S. stock markets are open for trading on normal business days only.