Growing an ounce of cannabis indoors can produce as much carbon pollution as driving 370 miles! Researchers explain why it’s so energy-intensive — and what we need to know in order to cultivate it more sustainably.

When the World Health Organization officially declared a pandemic in March 2020, the world ground to a halt: Factories closed, roads emptied and planes were grounded. How did COVID-19 lockdowns affect climate change? A climate scientist explains.