EPA-approved oil dispersants - themselves petroleum-based products with unknown long term impacts - are products of the kind of old thinking and outdated design that got us into this mess in the first place.
While we may no longer be tracking in as much bacteria on our shoes, we are not tracking in dangerous pollutants. It may be time to return to the practices of the 15th century to protect the health of our homes.
The issue of toxicity and chemicals is one that lies somewhat separate from the climate discussion. While it gets lost in the shuffle sometimes, the pressure on companies to deal with it just keeps rising.