What would you do with a trillion dollars? The ultimate thought experiment opens our eyes to ten world-changing ideas within our grasp If we can come up with a trillion dollars to bail out banks, imagine what else we could do. Science journalist Rowan Hooper decided to find out, speaking with experts of all kinds about ten incredibly ambitious projects that— if realized—would secure profound, enduring benefits: trying to end global poverty, reverse climate change, extend our lifespans, refreeze the Arctic, save all endangered species, and more. Then, he dives into strategies and costs to see: How far would $1 trillion really go? You’ll have to read on to learn which project he concludes would do the most good . . . but the biggest surprise is how many astonishing advances are actually within our grasp—if we dare to reach for them.