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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.
Ant colonies direct traffic flows of millions of individuals along the best routes – army ants even manage inbound and outbound lanes – but how? Geoff Gallice/Wikimedia

Nature’s traffic engineers have come up with many simple but effective solutions

Insects aren't known for having big brains, and slime moulds and fungi don't have any. So how do they solve challenges that test the ingenuity of human transport engineers?
According to a recent report, New Zealand will need to increase renewable electricity generation, plant more trees and continue switching to electric transport more rapidly to achieve its zero carbon goal by 2050. from www.shutterstock.com

New Zealand’s productivity commission charts course to low-emission future

New Zealand has set itself a goal of becoming carbon neutral by 2050, and a recent report by the Productivity Commission lays out how it could hit that target.
Victoria has led the way in upgrading intercity rail services with medium-speed VLocity trains that have a cruising speed of 160km/h. Joe Castro/AAP

Let’s get moving with the affordable medium-speed alternatives to the old dream of high-speed rail

High-speed rail for Australia has been on the drawing boards since the mid-1980s but has come to nothing. Three states are developing medium-speed rail with federal funding, but NSW is missing out.
Smart bus use can transform public transport in cities, as EMBARQ is doing in Brazil. EMBARQ Brasil/Flickr

Don’t forget buses: six rules for improving city bus services

Trains and trams get most attention, but 'tweaking' bus transit can transform cities. Buses can be more cost-effective and deliver better service, especially for small to mid-sized cities.

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