The challenge of mining rare-earth materials outside China

Five years ago, the cost of rare-earth materials that are critical for today's electronics went through the roof. An export quota set by China, which mines most of the world's rare earths, caused the price run-up. Though ...

Cutting our carbon footprint

Roofing materials that double as solar panels and can also moderate the temperature of buildings are among the next-generation building products being developed at UNSW.

Improving the biodiversity of green roofs

Using living organisms such as bacteria or fungi, as an alternative to chemical fertilisers, can improve the soil biodiversity of green roofs, according to new research from the University of Portsmouth.

Two birds, one stone: Green roof gardening in the city

I'm a New York native, born and raised in Ozone Park, Queens. My family has a decent amount of space in our small backyard to grow fruits and vegetables. Tomatoes, chili peppers, squash and cucumbers are just a few items ...

Would you like greens with that?

What if the greens you need for tonight's dinner were grown on the roof of the office where you work? From a cook's perspective this is a dream – fresh produce and no time wasted on shopping. And the advantages of urban ...

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