Planet problems are and will increasingly become a central focus for all humans. To think of just 50 more years of continued polluting and I'm glad I won't be around. Have you folks already noticed how fish menus have changed at your local restaurants? Notice some of the permanent substitutions? It's a sign folks of our negative impact on this planet. I'd say we have less than 50 years by far to make some serious inroads on our unfortunate way of living and companies like ZEN hold the key to that success. Unfortunately, politicians only see 4 years or so into the future....not 50 and more importantly not 100.