John Bradley

Highways basking in the hot sun are wasted energy. Scott Brusaw's solution? Make them out of solar panels

David Keith believes strong-arm strategies could soon be our last resort for reversing record levels of carbon in the atmosphere

It would be easy to dismiss Mitchell Joachim’s fantastical vision for ecological supercities, with their flocks of jetpacks and mass-transit blimps that look like flying monster jellyfish, as science fiction—if he wasn’t actually building them

For environmentalist Jesse Ausubel, going green means land conservation and energy efficiency—and forgetting “boutique” renewables like windmills and biofuels

Jeffrey Martin’s closed-loop plan for recycling heat-trapping carbon emissions into gasoline

With the Sahara desert rapidly encroaching on livestock-nourishing grassland, architect Magnus Larsson proposes a 3,728-mile-long barrier wall—built by bacteria

Authorities bust top Tour de France cyclist for a new drug few knew existed