Energy and Process Engineering

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Climate emissions from air travel 50 per cent higher than reported

A new study that looked at nearly 40 million flights in 2019 was able to calculate the greenhouse gas emissions from air travel for nearly every country on the planet. At 911 million tonnes, the total emissions from aviation are 50 per cent higher the 604 million tonnes reported to the United Nations for that year.

W. Ludwig Kuhn

Ultrasound can save fish in hydropower rivers

Shooting sound waves through water can remove dissolved gas that results from hydropower production in rivers. This gas can harm fish. Researchers are now ready to test techniques to reduce the risk in real hydropower plants.

second hand clothes

Second-hand clothing is good, but less is best

Norway will reap major environmental benefits if residents stop sending wearable clothes out of the country, according to a recent study on clothing consumption in Norwegian households.

Climate talks and the way forward

What should power the future’s shipping fleets? How can we change the way we build buildings so that they’re truly climate neutral? If we’re going to actively alter the planet’s climate, how should we study this?

Edgar Hertwich
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An emergency brake for the climate

To limit global warming to 1.5 degrees, the EU’s Science Advisory Board on Climate Change recommends that Europe reduce its greenhouse gas emissions by 90-95% by 2040 compared to 1990. Fossil fuels should be phased out as quickly as possible.

Listening to Leviathans

Nineteenth-century Norwegian technology helped bring large whale populations to the brink of extinction. Can 21st-century technology help save them?

Moose in forest, photo by Endre Grüner Ofstad

Moose can play a big role in global warming

Climate researchers have long known that large animals, like moose, could play a role in how much the Earth will warm due to climate change. But the question is, how much? New research shows the answer can be a lot.

World’s food production footprint on climate and environment

Cattle farming has often been portrayed as having the most detrimental environmental impact because it takes the most grazing land, uses a lot of water and has large methane emissions. But it’s not the worst. And is locally produced food always best for the environment?

Companies need to report their climate risks

Regulators across the globe regularly require publicly traded companies to tell their stockholders about potential financial risks. A March proposal from the US Securities and Exchange Commission (SEC) would require companies to disclose the risks that climate change poses to their financial health. Adopting the rule is an important step for the climate, researchers say.

The Alchemists: Turning wild water into white coal

How Norwegian scientists and engineers harnessed the country’s wild waterfalls by developing super efficient turbines — and how advances in turbine technology being developed now may be the future in a zero-carbon world.