For pure enjoyment The Martian is a good read but also it helps us recognize how travel to Mars has and will have positive externalities on earth.
By recognizing the tradeoffs of recycling, preserving endangered species and improving world health, doing good could become more productive.
While some high middle income economies have slowed down and then accelerated again, using World Bank criteria, China's economic growth is tough to predict.
Currently slowing down, China's economic growth might be challenged by the middle income trap that has caught Brazil but not Taiwan or Malaysia.
Production possibilities graphs and GDP comparisons show us that a bigger gender gap prevents countries from achieving their economic growth potential.
Looking at delayed gratification through Walter Mischel's marshmallow test and other studies, researchers can better grasp who will save for retirement.
Long queues can be reduced with new incentives. Instead of first-come-first-served, if the last to arrive were served first, then we'd have shorter queues.