What If We Built Cities on the Moon?

If you could, would you live on the Moon? Not as one of the courageous early settlers, but as a citizen of a fully-functioning Moon city. What would they be built out of...

What If We Moved Earth?

Some 5 billion years from now, the Sun will expand and become a red giant. And the Earth might be just in the way… If humans were still around then, would we leave...

What if You Died in Space?

[dx_custom_adunit mobile_id=”RTK_v1lP”] If you were exposed to the harsh depths of space, you’d lose consciousness in 15 seconds, and be dead within 30...

What If Aliens Arrived Tomorrow?

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets in the Milky Way alone, don’t you...

This Is Why Sharks Are Important

When most people think of sharks, they picture a powerful predator lurking beneath the waves. Movies, news stories, and popular culture have helped give sharks a...