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Over the past few years I've been to a few photography festivals to review portfolios. When I first met Christopher Chadbourne in New Orleans about two years ago, he was showing some photos from a project about state fairs. I liked the photos and that was pretty much all we talked about.

Weeks before Minnesota's new sales tax law takes effect, online retailer Amazon is cutting its ties to members of its Associates program who live in the state. The new law requires businesses that have a presence in Minnesota to collect sales tax.

Amazon has taken similar steps in other states that have passed laws like Minnesota's, ending the contracts of Associates — people and businesses that are paid for sending customers to the retailer.

The rise of curbside recycling programs in the last few decades has meant more glass recycling. But for a long time, many recycling centers didn't have the technology to turn recycled glass into the raw material for new bottles. Instead, recycled glass often wound up being used as a cheap construction material, or even to cover landfills.