Why green energy finally makes economic sense
Renewable energy experts have long hoped that solar and wind power would someday become the cheapest way to generate electricity, allowing the world to shift…
Articles by Knowable Magazine
The tricky task of tallying carbon
To slow or stop global warming, the world agrees it must cut carbon dioxide emissions. But monitoring each nation’s output of greenhouse gases is not…
A middle path to sustainable farming
Agricultural economists are homing in on hybrid, low-input methods that will both safeguard the environment and feed the future billions Alfalfa, oats and red clover…
Toward greener plastics
Researchers and companies are working on new kinds of biodegradable packaging, bottles and other products that break down like compost. Plastic is kind of a wonder material. It’s cheap, light…