If you really could take the CO2, when you burn hydrocarbons - coal, for example - if you could really capture the carbon and sequester it - they call it CCS - if the extra capital cost, energy cost, and storage costs over time didn't make it super expensive, then that's another path that you could go down.

Investing for the poor requires participation from the entire community.

Good programmers stay open minded to that even though there is no obvious way to improve what they've done they... they keep looking and they listen to what other people have to say.

Being able to see an activity log of where a kid has been going on the Internet is a good thing.

We were young, but we had good advice and good ideas and lots of enthusiasm.

In K-12, almost everybody goes to local schools. Universities are a bit different because kids actually do pick the university. The bizarre thing, though, is that the merit of university is actually how good the students going in are: the SAT scores of the kids going in.

Software will get to be somewhat more mature, ah, but it will never be as predictable as most areas of engineering.