Yes! Magazine (Powerful Ideas ~ Practical Actions) is a breath of positive fresh air! The major sections of this publication include Peace and Justice, Happiness, Planet, New Economy and People Power. It has a sense of reaching for constructive ideas. I would suggest picking up one hard copy at the bookstore and then following them online. Check out teacher contributions that truly address the preparation of kids- especially at middle and high school.
The article On the Face of this Truth by Robert Jensen is one example of how straight forward discussion about our future can be embraced without the sugar-coating, but also with optimism.
More and more contemporary emphasis will involve not only understanding the science of our future, but the psychology and ethics of it. This applies to Jensen's piece. When reading, note these themes: Emotional reactions to global changes; "Exceptional truth," Who is listening?, Denial.