Hydrogen has a dirty secret – let's not think it's always a green fuel
5 June 2019
Produced the right way, hydrogen can be a cleaner, greener alternative to fossil fuels powering our transport and elsewhere. But too often that's not the case
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Premium
Fracking with CO2 unlikely to be green
5 June 2019
A Chinese research team has drilled and fracked five oil wells with carbon dioxide, rather than water
How teabags became a secret weapon in the fight against climate change
5 June 2019
Climate change could release a torrent of carbon from the Arctic tundra into a warming world. To gauge the threat, ecologists have recruited the humble teabag
Australia could start exporting sunshine in the form of hydrogen
5 June 2019
As its trading partners turn to clean energy, Australia needs to find an alternative to selling gas and coal. Hydrogen could be the answer
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Ancient Roman air pollution caused climate change in Europe
31 May 2019
The Roman Empire produced so much air pollution from fires in homes and on farms that it had a detectable cooling effect on the regional climate
Koala conservation goes high-tech with virtual reality and drones
31 May 2019
An Australian project has demonstrated airborne thermal cameras and virtual reality could much more accurately pinpoint where koalas live, and improve conservation efforts
Stalled jet stream has caused two weeks of tornadoes in the US
29 May 2019
A warming Arctic has stalled the jet stream over the Pacific ocean, leading to severe weather across much of the US, including a record-breaking run of tornadoes
African elephant poaching is falling at last - but it's still too high
28 May 2019
The number of African elephants being killed by poachers has fallen to below 15,000 per year, which is still too high for populations to have a future
