Black Friday was a big day for taking stock of our future. While most people's attention was on shopping, the Trump administration released a report, required by Congress, on the consequences of global warming. The authors conclude that we must act forcefully to avoid substantial damage to the U.S. economy, environment and human health and well-being over the coming decades.

Crude oil prices closed on Black Friday, at $50.39 per barrel — down 7.76 percent from the previous day. At the beginning of October the price was $75 — 50 percent higher.