As the world's largest rainforest, the Amazon is not only an important carbon sink, but also home to thousands of species of plants and animals and a crucial part of the water cycle.
People tend to interpret things through a lens of their pre-existing beliefs. But they are not immune to changing their view, if you treat them with respect and understanding.
It's not only nuclear bomb tests that disrupt the atmosphere, there are a number of natural events that can do the same. But how long does any damage last?
The coronavirus pandemic caused the UN's annual climate conference to be postponed by a year, but it was also responsible for a drop in carbon emissions. Is it enough and will it last?
Absolute temperatures are expected to rise more slowly in the tropics than in higher latitudes and polar regions, but the combination of heat and rising humidity will make life more challenging.
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To limit warming to 1.5℃ above pre-industrial levels, we'll need to cut global emissions by 7.6% each year this decade. It's difficult, but not impossible.
If agricultural land was used to grow crops, it would limit methane emissions from livestock, but not store a substantial amount of carbon. Growing trees is what makes the difference.
The last time global carbon dioxide levels were around 400ppm was four million years ago. On average, the world was 3℃ warmer, but in high northern latitudes, it was up to 14℃ warmer than today.
The drop in traffic during COVID-19 lockdowns reduced global emissions. If we keep encouraging cycling and working from home beyond the pandemic, our climate goals may become more achievable.
If we had not altered the composition of the atmosphere at all through emitting greenhouse gases, particulate matter and ozone-destroying chemicals, the average temperature would have remained stable.
While it's impossible to stop all extraction of fossil fuels now, renewable sources are already generating 25% of global electricity demand now and their contribution continues to grow.
Countries account for emissions based on all activities that happen within their territory, which means countries that export more than they import will likely have higher per capita emissions.
Matthew Flinders Professor of Global Ecology and Models Theme Leader for the ARC Centre of Excellence for Australian Biodiversity and Heritage, Flinders University
Professor of Earth Science and Climate Change, Director of the Earth and Sustainability Science Research Centre, Director of Chronos 14Carbon-Cycle Facility, and UNSW Director of ARC Centre for Excellence in Australian Biodiversity and Heritage, UNSW