Is it possible to create noise-cancelling headphones, but for an apartment?
What are the chances that a bridge will stay standing?
Are we getting close to the limits with construction?
Cape Town may have to turn the taps off...
Is it true that there is no restriction for an elevator ascent but not for desent?
Could the internet actually fall apart...
Can human waste be a source of power? Should we be searching sewage for a source of sparks?