The death of famed biologist Paul Ehrlich on March 13 at 93 has occasioned a flurry of commentary in the press and on social media, some of it thoughtful, some of it scurrilous, and most of it insufficiently attentive to his remarkable contributions to science and to public awareness of the environmental threats faced by humanity.

Turning Fire into Fertility The Social Tawi is designed to create high-quality biochar, a powerful soil amendment that enhances compost and boosts soil health. By carefully controlling the burn process, it captures wood at its charcoal phase before it turns to ash. The biochar is then quenched in water, activating its