New tech developed at UC Berkeley could open the door to inexpensive solar power

The modular 'Filtration Block' can be hung from a ceiling or wall to purify indoor air

How America can save money and stop wasting less food, water and energy

Japanese artist transforms fast food bags into miniature forests

How business leaders should sell the sustainability message

Poetic works created from discarded Guggenheim Museum tickets

Jeff Himmelman on the shifting solar landscape

Art and environment connect in exhibition at London's Chelsea Physic Garden