Nutritious and delicious, avocados have conquered palates across the globe. Business is booming — in the past 20 years, avocado production has tripled. But this is also causing a massive strain on resources in places where the water-intensive tropical fruit grows — in particular, Latin America. Is it possible to keep eating our treasured avocados with a clear conscience?

Protesters in London have just wrapped up a month-long action inside an illegally dug tunnel intended to stop construction of a new high-speed rail line. While trains have an eco-friendly repute, protesters say lost trees and construction emissions make the project a losing equation. Since the UK set its net-zero emissions goal two years back, the protest has put the topic back in the spotlight.

China is big on coal — it's the world's largest producer and consumer. Despite that, China is presenting itself as a leader in climate protection on the world stage, recently announcing plans to go carbon-neutral by 2060. It's massively invested in wind and solar power, and has finally launched an emissions trading scheme. But can China meet its ambitious promises?

More than 70% of India's electricity comes from burning coal, and much of that is imported. Imported coal lands in Goa — a coastal state famous for its white sandy beaches and biodiversity. The government plans to transform the region into India's coal hub. But citizens are pushing back in a bid to prevent pollution and protect the state's glimmering green hills.

The ways we get around are changing – and that's especially true in big cities. Vehicle and bike-sharing services are booming, making it easier to leave cars at home or forego car ownership altogether. Barcelona has the highest vehicle density of any city in Europe. But it's now breaking ground on a transport and urban planning initiative that will grow its innovative public spaces for residents.

Experts estimate that we will produce more than 50 million tons of electronic waste globally by 2021 – and the precious metals this e-waste contains often aren't recycled properly. But a promising research project at the University of Cape Town in South Africa aims to change this.

They’re Australia’s climate change refugees and they’re looking for somewhere to roost. But their smell and nocturnal shrieks have made them unpopular with locals. Scientists warn against trying to get rid of flying foxes, calling them the ‘canaries in the coal mine’ for what will happen to other species as temperatures rise. Their disappearance would spell disaster for forests and woodlands.

All of our food waste has to go somewhere. But how our trash is disposed of can actually have an impact on climate change. In the US's largest metropolis, there's a simple way New Yorkers can reduce their methane emissions, and maybe even spruce up their gardens in the process.

Philadelphia, one of the biggest, poorest and most violent cities in the US, is seeking to expand its green spaces by planting more trees. Besides combating sweltering temperatures in summer, there's evidence increased tree cover may also help bring down levels of gun violence.

How can our economies keep growing when we live on a planet with finite resources? The short answer, according to some, is they can't. Ecological economists say it's time to instead embrace "degrowth." But what does this mean, and how do we change? DW's Ruby Russell explains.