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![Paul R. Ehrlich](https://www.writersvoice.net/wp-content/uploads/2014/09/ehrlich-2001.png)
![Ryan Mitchell](https://www.writersvoice.net/wp-content/uploads/2014/09/ryan-pro-220x2982.jpg)
World-renowned biologist Paul Ehrlich of The Population Bomb fame talks about his new book (with Michael Charles Tobias) Hope on Earth: A Conversation. And Ryan Mitchell discusses Tiny House Living: Ideas For Building and Living Well In Less than 400 Square Feet.