This tiny floating dwelling is big on sustainability

Recycling programs give fishermen incentives to collect discarded fishing gear

Global investment in renewable energy powered to record $257 billion in 2011, according to UN report

Small-scale processors help meat go local

Conservation group American Rivers urges support for clean water protection

A solar-powered light installation illuminates the Sumida River

Boat's captain hopes to inspire new solutions to combat climate change

An epic quest by James Bowthorpe to row the Hudson River from its source to NYC -- in a kayak made of recycled waste

Underground growers secretly splice fruit-bearing branches onto city trees

In Rotterdam, Holland, discarded turbine parts are repurposed as elements of play