What If No One Ever Died?

For most of human history, living to old age was a rare achievement. Just over a century ago, the average life expectancy in the United States was only around 50 years...

What If We Had Flying Cars?

Imagine an entire network of flying cars zooming around 2,000 meters (6,561 feet) above our congested city streets. Your morning commute would be a lot different up...

What If We Burn All the Oil?

Scroll down to watch the video.  What could you do to stop a giant fire tornado? Or anchor a floating house? If your answer is “probably nothing,” then...

Life on Earth Without the Moon

From the earliest moments of human imagination, the Moon has always been there. Hanging in the night sky, shaping tides, marking time, and quietly influencing life on...