MNN lists

11 American geographic anomalies

How to identify 10 common butterfly species

5 awesome, unusual ways to harvest rainwater

5 handy airport animal helpers

8 lakes and rivers that are drying up

9 surprising pollinator species that aren't bees

9 unforgettable urban waterfalls

10 mountain hikes for city-dwellers

6 surprising symptoms of GERD

9 of North America's most fascinating kettle lakes

12 new bee-supporting plants to plant this year

9 famous rocks from around the world

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