At the same time, farmers face unprecedented challenges of climate change, high oil prices driving demand for biofuels, and rising costs of land and water. (scientificamerican.com)
We've developed these important new disciplines because we live in a time of unprecedented challenges with food, weight, and health. (psychologyofeating.com)
Today's schools face unprecedented challenges in preparing students for the unpredictable demands of the future workplace. (ascd.org)