The fossil fuels powering cars, trains, and planes are harming the environment, but scientists are creating innovative and clean transportation solutions.
While popularized by President Donald Trump, the term "e;fake news"e; actually originated toward the end of the 19th century, in an era of rampant yellow journalism.
New technologies such as augmented reality, brain-computer interfaces, and lifelike robots will change the way humans interact with one another and their environment.
Follow four centuries of discovery and change, from the moment people set out to explore the world to turbulent times when it turned upside down-even for the people who stayed home!