On average, there are 75 workers available for every 100 job openings across the country. Here's how it varies by state.
The early 1800s were a time of rapid change in New York City. This map shows the city in 1836, alongside the modern day metropolis.
From the pyramids to the Eiffel Tower, our creations have scaled dramatically over the centuries. Which have been the world's tallest structures in history?