We use flowers to express love, mark significant events and celebrate holidays, but our bouquets can come with significant costs. Here’s how the flower industry is impacting the planet — and what you should ask before you gift again.

Plant-based milks have a lighter impact than dairy milk in terms of carbon pollution, water and land use — but not all are created equal. Two sustainability researchers crunch the numbers to guide you towards more Earth-friendly options.

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.

Bee populations worldwide are declining due to climate change. But it’s not too late to save these amazing insects — and you can help.

This green roof and farm offer a Swiss army knife of solutions — flood control, solar energy, fresh produce, green space for city dwellers, jobs, learning opportunities, and more — to some of our most pressing urban problems. Landscape architect Kotchakorn Voraakhom tells us how it works.

Cultured meat could be coming to our plates in the next few years. How is it made? Will it help — or hurt — the planet? Here’s what we know.

How can you protect crops against global warming? One answer: find the secrets of plants that already thrive in the most punishing climates, says microbiologist Rusty Rodriguez.