There are few forms of the botanical world as readily identifiable as fern leaves. These often large, lacy fronds lend themselves nicely to watercolor paintings and tricep tattoos alike. Thoreau said ...

Salvinia molesta can double its biomass in 36 hours. It spreads across ponds, lakes and slow-moving waterways in a smothering ...

My son Cameron, 11, is and has always been a mover. If there’s a log, he’ll jump on it; a couch, he’ll climb it; a puddle, he’ll be happy to splash around. In our suburban neighborhood the ...