Sustainable…

…personal finance

It's probably best to keep money out of stocks since investing in them may amplify profit-seeking behavior among corporations.

…shopping

When you can, get things second-hand. Start with local options that don't require shipping:

If you're concerned about scams, read Craigslist's advice for avoiding them here.

When local markets fail, you can search eBay with the "Used" filter.

…transportation