Metrics to keep an eye on in 2024, from solar cells to superhero movies

By Gilead Amit, Rachel Lloyd, Jonathan Rosenthal, Tom Standage, Pratibha Thaker and Christopher Wilson

Sometimes the best way to follow a trend is to plot it on a chart. Here is a selection of noteworthy metrics that are worth keeping an eye on in 2024, from solar-cell technology to superhero movies. Some are merely fun—while others are potentially world-changing.