What If

If we had to abandon Earth, which exoplanet would we choose? Explore six promising worlds and uncover which one could become the next Earth.

A countdown of the universe's most terrifying planets, ranked from mildly unsettling to utterly nightmare-inducing.

To cool a burning Earth, we dump all its water onto the Sun. Explore whether it's possible, why reaching the Sun is so hard, and what happens when we drench it.

Travel back to the Permian period, home to the largest mass extinction in Earth's history. Learn what caused it and which species managed to survive the devastation.

The next 100 years will transform humanity through AI, climate control, revived species, and space missions. Travel decade by decade into our future.

A look into how humanity might physically evolve over the next thousand years, from tech-enhanced bodies to adaptations shaped by our modern lifestyles.

A look at cutting-edge innovations powering the future of electric vehicles and renewable energy, and the path toward a cleaner planet.

What if dinosaurs evolved to survive the asteroid impact? Explore reimagined species with new traits-from armored giants to miniature survivors-built to endure catastrophe.

A breakdown of Elon Musk's bold Mars claims as we separate scientific reality from speculation and examine whether a million people on Mars is truly possible.

Terraforming the Sahara could bring life or unleash disaster. Learn the biggest challenges of turning the desert green-and whether this project could save or destroy the world.

Every supervolcano erupts at once, causing global chaos and potential extinction. Discover how many could blow and what humanity would face.

Explore humanity's potential future beyond Earth-could we build a ring world in space or terraform Venus? Discover the possibilities, challenges, and what life might be like on these new worlds.

Investigating the potential signs of microbial life on Venus and what this discovery could mean for finding life beyond Earth.

Exploring the idea of an antimatter universe where time flows backward, physics changes, and our 'opposite' selves might exist.

Whether blowing up an incoming asteroid could save Earth, and what the risks and realities of such a mission truly are.

How humanity might try to evacuate Earth during a planet-ending disaster, where we'd go, and how many could realistically survive.

A new look at whether the Universe began with a Big Bang or a Big Bounce, and the possibility that it has no beginning or end at all.