I drove 1800 miles in a Hydrogen Car

my first thought is how much platinum is required per car.... does this present a scalability issue? Platinum is not exactly abundant. Is there any alternative to platinum? And so glad to see you're again doing what you love Diana, hope your feeling much better. <3

just a thought along the renewable energy route, maybe a series on energy storage? Due to the intermittent nature of wind and solar.. it's an issue that needs new solutions... there are many technologies on the horizon that are alternatives to the disadvantages of lithium ion batteries on a large scale that would be great to share info on :)