What advice would you give your younger self if you could travel back in time?

Obviously, we can't just pack our stuff and move there today. But what if we terraformed it - reshaped it into an Earth's image?

What if everyone on the planet said "no" to their gas-powered cars right now? And not just cars - gas dryers, water heaters, gas stoves, lawn mowers... What if we...

Doesn't it suck having a noisy neighbor? Or constantly running into your ex? We all need personal space, but often find we can't get enough. Don't you wish the world was...

What if the Moon suddenly began getting closer to Earth? To the point where it was on a collision course with our planet? Would the Earth survive the crash?

Let's say, the Earth's magnetic field took a break and allowed strong solar winds to strip away our protective space-blanket. Would Earth instantly turn into a big...

Some say life is a roller coaster. What if it was more like this? We don't notice the earth spinning now, so what would life be like if it spun a little faster? Would we...

What if all the coral reefs died out? What if we lost all of our coral reefs overnight? Ocean diving would become less impressive, that's for sure. But what about the...

Once a revolutionary invention, it's now filling up our oceans and killing thousands of whales, birds, turtles... Just how much plastic do we have around us?

This giant rock lights up the night and can even change colors. So what would we do without it?

How cool would it be to see a real life T-Rex? If only that one fatal asteroid never hit Earth.

To meat, or not to meat: that is the hotly debated question. How would life on Earth change if we stopped eating all things animal?

Say one day you were exploring space looking for a new planet for humans to inhabit, but came across a black hole and decided – why not check it out? Would you...

If gravity were suddenly gone forever we’d all realize pretty quickly how much we’re taking this universal force for granted.