The Murray–Darling Basin in southeastern Australia is a wide catchment that extends across four states and the Australian Capital Territory, covering more than a million square kilometres and representing about one-seventh of Australia’s total land area. Its management is one of Australia’s largest and most complex environmental challenges.

Depending on who you listen to, hydrogen is the answer to the question of a sustainable future. Yet, as is often the case with such major questions, the issues around hydrogen are not simple. Here we dig into the evidence to discover the role that hydrogen has to play in facing the greatest challenge of a generation.

Rooftop gardens have the potential to revolutionise urban environments into the future as they boost biodiversity, clean polluted air, fight climate change and offer a pleasing aesthetic.

What are “the commons” and why should we care about their protection and security? We take a look at the natural and cultural resources at stake.

We look at the damage green-technology minerals may do and how we might overcome the challenge.

In addition to being a healthy food to eat, and beyond their medicinal uses, in recent years mushrooms and other fungi have been increasingly recognised for the wide range of environmental benefits that they can offer and are increasingly promoted as a biological solution to some of the world’s biggest challenges.

Is a future without gas possible? As the Australian government expands the country’s gas production, we take a look at the real impacts of this “transition” fuel.

We take an in-depth look at light — blue light, warm white and cool white, as well as the colour spectra coming from common light sources and their potential health consequences.

We explore the current state of palm oil, how it relates to you and its impact on the environment from deforestation to threats to endangered species.

Global seafood consumption has quadrupled over the past 50 years and interest in environmentally conscious fish choices has grown. But which types of seafood are sustainable and how can you be certain? We take a look.

Say goodbye to monocultures, synthetic fertilisers, pesticides and genetic modification — there’s a new holistic farming system on the block: regenerative agriculture.

Not so long ago, driverless cars were being hyped as the way of the future. Now their advocates are backtracking and have doubts about whether fully autonomous vehicles can exist, except in purpose-built “smart” cities. We take a look at the likely future and the benefits and downsides of driverless vehicles.