| 1 | Do you feel guilty when you' re not doing something productive? | |
| 2 | Instead of high yield, however, they got water and air pollution. | |
| 3 | I submit that doing less makes you more effective, and thus more productive. | |
| 4 | Their goal is to engineer rice strains that can produce high yields despite those conditions. | |
| 5 | Universities in the U.S. and Europe are still the best at turning bright students into productive inventors. |
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