Even a 1 mph speed boost would make things pretty weird.
What if the dinosaurs had survived—or all viruses suddenly disappeared? What if the planet was made of blueberries, or gravity stopped working? Even the most outlandish thought experiments can provide insight into how the world works. So let your imagination run wild with this curated collection exploring eleven out-there scientific “What Ifs?”
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If the force of gravity just got switched off one day, floating off into space would be the least of your worries.
A Q&A with the one scientist brave enough to figure it out.
Experiments in evolution are exploring what would happen if we rewound the tape of life.