As consumers, most of the choices we make leave behind an ecological footprint. So what does it really mean to be green?

Even educated fleas do it - we learn the art of flirting in the animal kingdom. Plus, do cats fly? Apparently they do.

The world ticks closer to doomsday, China steps up on renewables & Morocco's mosques get a green makeover.

Wetlands may not be as sexy or eye-catching as coral reefs or lush rainforests but these diverse, complex landscapes play a vital ecological role. They perform a vast array of functions - from flood defense and water purification to even flavoring our whiskey. In honor of World Wetlands Day, we pay homage to the world’s wonderful wetlands with a tour of swamps, bogs and marshes.

Germans protest industrial scale farming, while Venezuela seeks to solve its food crisis with urban agriculture. In Cape Town, farmers battle drought and water waste. And why coconuts have become an election issue in India.

What might Donald Trump's presidency mean for US climate policy? As hop farmers feel the heat from climate change, scientists demand action on Arctic at the World Economic Forum. Plus, how art is being used to illuminate renewable energy efforts in Africa.

What might Donald Trump's presidency mean for US climate policy? As hops farmers feel the heat from climate change, scientists converge on the World Economic Forum. Plus: how art is being used to illuminate renewable energy efforts in Africa.

How Germany's industrial heartland became a center for environmental projects and Europe's Green Capital 2017, and how residents transformed a trash-strewn Rio slum into an oasis of green development. Plus, an African soccer legend is tackling plastic waste.

We revisit some of our favorite musical stories of the last year: The lit-hopper behind the Rapper's Guide to Climate Chaos, scientists turning climate data into music, and how beatboxing with birds could help protect biodiversity.

With most of the world's population now living in urban areas, cities will need to adapt and prepare for climate change. Some are already rising to the challenge.