Turning gravity into light
A lamp that runs on a hanging weight instead of fuel, plugs or batteries. What free, unlimited light would mean where the grid does not reach.
Imagine if you can turn any weight into electrical light. You will not need fuel. Nor plugs and batteries.
How having infinite free light could help mankind?
Well jungle, homework, dynamo.
Read next
What are the returns from investing in Space technology?
Is money spent on space travel worth it? What the other 99% actually got out of it: maps, vacuum cleaners and the internet, among other things.
Addiction is Psyche not Chemistry
Almost everything we think we know about addiction is wrong: it is not a chemical hook. Rat parks, bonding and cages tell a different story.
A not quite scientific test of Alcohol vs LSD
A fun and not remotely conclusive test of how a person behaves under alcohol and under LSD, decided by catches, IQ questions and burgers.