MNN lists

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

17 photos of dogs enjoying a windy day

Beavers: 8 things to know about nature's most impressive landscape engineers