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Articles on Greenhouse gas emissions (GHG)

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Planes can create clouds of tiny ice crystals, called contrails, and some studies suggest they could have an a significant effect on climate. from www.shutterstock.com

Climate explained: how much does flying contribute to climate change?

Globally, emissions from air travel account for only about 3% of the warming human activities are causing, but aviation affects our climate in a number of ways.
If the cement industry were a country, it would be the third-largest emitter of CO₂ in the world. Joe Mabel/Wikimedia

Green cement a step closer to being a game-changer for construction emissions

The cement needed to make concrete – the most widely used man-made material – is a major source of global emissions. Researchers are working on a green replacement that could transform the sector.
The best way to compare emissions from electric cars is to assess all phases of a life cycle analysis. from www.shutterstock.com

Climate explained: the environmental footprint of electric versus fossil cars

In New Zealand, where more than 80% of electricity is renewable, the carbon footprint of electric cars is 62% lower than that of fossil cars. But their lithium battery has other environmental impacts.
Prime Minister Scott Morrison (right) and Energy Minister Angus Taylor at Snowy Hydro Scheme. The Grattan Institute says the government should better encourage investment rather than build electricity infrastructure. LUKAS COCH/AAP

Governments took the hard road on clean energy – and consumers are feeling the bumps

Australia’s entire coal fleet will retire in the next few decades. The federal government’s response to the Hazelwood coal plant closure has left a mess – it must do better.
Swedish teenage climate activist Greta Thunberg speaks as she takes part during the Climate Strike in New York. Tens of thousands of protesters joined rallies on Sept. 20 as a day of worldwide demonstrations calling for action against climate change. (AP Photo/Eduardo Munoz Alvarez)

After Greta Thunberg’s UN address, an ethicist weighs in on our moral failure to act on climate change

The kids are right when it comes to climate change, says an ethicist: adults have a moral and ethical responsibility to take the necessary actions to stop climate change.

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