This Week in Science: Reversing Alzheimer's damage, the safest place on Earth, and more!First up: Oceanographers exploring a sonar blip assumed they'd find a shipwreck. Instead, they stumbled onto an eerie scene that looked like the ocean's own 'Backrooms'. Also this week:

Alzheimer's symptoms reversed in mice after just two injections

The country with the best chances of surviving a global catastrophe

When you eat your meals matters

Would you eat a cookie made from plastic waste?