When you pay for a Prime account, you can share the with a few other accounts (2 others, I think). The streaming service is only available to the paying Prime account, so the other two have to spend another $75/year to get the streaming.
A solar power plant frees up fossil fuels to be used elsewhere, so it's already "producing" them indirectly.
Why not make a solar power plant at that point? For storage purposes, batteries probably store more than 15% of the power that's used to charge them and don't require combustion. Neat research either way, though.
Yahoo mail has a nice tab-based interface so you can open multiple emails while writing a few more, which Gmail is missing. It's also hard to migrate 10 years' of emails to a new service (they make it hard, at least) - not to mention getting everyone to use your new email address.
fuel chemistry is pushing the bounds of space exploration. And steel engineering. And antenna design. And numerous other fields.
Anybody know of similar stats for driving?
Quick look-up gives 1.25 fatalities/100 million miles traveled for 2008. Haphazard calculating gives 60 accidents/100,000 hours driving (50mph, 1 fatality in 1000 accidents).
Hard to compare, though.
In my day we managed to carry around weed and not get caught. The fact that she got caught with a Jolly Rancher proves what I suspect - kids today are a little slower, mentally speaking.
Causation?
Understanding is always the understanding of a smaller problem in relation to a bigger problem. -- P.D. Ouspensky