Articles on Sustainability

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Conveyors carry mixed plastic into a device that will shred recycle them at a plastics recycling plant in Vernon, California. AP Photo/Reed Saxon,File

The plastic waste crisis is an opportunity for the US to get serious about recycling at home

Since China stopped importing 'foreign garbage' in March 2018, scrap – especially plastic – has built up in the US. Will this shock trigger long-overdue investments in plastic recycling here?
Felicity Burke/The Conversation

Trees are made of human breath

Urban trees are literally made with the help of human breath – they turn the carbon dioxide we breathe out into the building blocks of plant growth. So your local trees have a piece of you inside them.
Purse seiner fishing in the Indian Ocean. Footprint estimates do not assess how sustainably resources such as fisheries are managed. Jiri Rezac

Yes, humans are depleting Earth’s resources, but ‘footprint’ estimates don’t tell the full story

August 1, 2018 is 'Earth Overshoot Day,' a date coined by the nonprofit Global Footprint Network to publicize overuse of Earth's resources. But their estimates actually understate the problem.
‘Earthrise,’ which appeared on the cover of the second and third Whole Earth Catalog, was taken by Apollo 8 astronaut Bill Anders during lunar orbit, Dec. 24, 1968. NASA

Thing-makers, tool freaks and prototypers: How the Whole Earth Catalog’s optimistic message reinvented the environmental movement in 1968

The Whole Earth Catalog was a blueprint for sustainability that envisioned humans living in balance with nature. Its creative spirit was welcomed in a year riven by war, assassinations and riots.
Transport and livestock are both significant contributors to nitrogen pollution. Annalucia/Shutterstock.com

You’ve heard of a carbon footprint – now it’s time to take steps to cut your nitrogen footprint

The University of Melbourne is the first institution in Australia to have its nitrogen footprint calculated – it's 139 tonnes per year, mainly because of food production, energy use and transport.

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