These electric aircraft take off and land vertically so they don’t need runways. And they promise a quieter, more accessible and less polluting form of short-distance air travel than helicopters.
Methane is a potent greenhouse gas that can leak from oil and gas wells, pipelines and landfills. Satellites can spot the releases fast enough to get them fixed and help protect the climate.
The big question: Would climate engineering like sending reflective particles into the stratosphere or brightening clouds help reduce the national security risks of climate change or make them worse?
Knowing which parts of Africa best help to store carbon means funding and policy efforts can be directed to protecting and increasing this carbon ‘land sink’.
Serious air pollution is a common problem in stations around Australia and the world. But solutions already exist, and some can be applied immediately to protect station staff and commuters.
Conditions deteriorated in 2023 but were stlil relatively good for ecosystems and agriculture. Unfortunately, the alarming decline of threatened species continued.
Cattle are major producers of methane, a potent greenhouse gas. But there are methods that can reduce their climate impact – if ranchers have incentive to use them.
Climate change is often seen as solely a technical problem. This is a misguided belief. Understanding how to build a better world begins, and ends, with understanding the societies which inhabit it.
Erle C. Ellis, University of Maryland, Baltimore County
Scientists have been debating the start of the Anthropocene Epoch for 15 years. I was part of those discussions, and I agree with the vote rejecting it.
A college junior who has gained a following by sharing high-profile people’s private flight information says that he is sharing public information. Others, like Taylor Swift, say that he is stalking.
Australia’s approach to estimating bushfire emissions is credible and sophisticated. But it must be refined as technology improves and the climate changes.