Biochar is a carbon-rich solid obtained from the heating of biomass in the (near) absence of oxygen in a process called pyrolysis. Its soil incorporation is increasingly discussed as a means to sequester carbon in soils and, thus, to help mitigate climate change. When deployed in agricultural...

Fifty years ago, Punjab embarked on its famous Green Revolution, leading the rest of India in that innovation, and becoming the country's breadbasket. Now its economy and society are struggling by relative, and sometimes even absolute, measures. Using the original Green Revolution as a...