Kevin Trenberth, University of Auckland, Waipapa Taumata Rau
New Zealand is considering a plan to tax methane from cows. But while cows and cars both emit greenhouse gases, they don’t have the same impact over time.
Already lacking the means to decarbonise their industry or turn to greener alternatives, poor countries could also be deprived of revenues from exports to Europe.
New research suggests it will be next to impossible to limit global warming to safe levels without relying on technologies to directly remove carbon from the air.
Despite claims that lowering speed limits will harm the economy, evidence suggests journey times are hardly affected. And beyond reducing the road toll, there are health and climate benefits, too.
Constructing and running buildings accounts for roughly a third of global energy use and emissions. So it’s alarming that a report to COP27 shows the sector is veering off course for net zero by 2050.
A new study emphasises the huge potential and environmental benefits of hemp production and provides a road map to develop the nascent industry across the UK.
Sponsorship from fossil-fuel companies is worth millions to Australian sport. But growing opposition from the public and athletes themselves may force sports to rethink these deals.
The energy-intensive process of producing cement and concrete contributes significantly to global warming while depleting resources. Much more sustainable alternatives are being developed.