Canadian forest tipping point

Canada’s 2023 wildfires have emitted around 1.5 billion tonnes of CO2, triple the annual emissions from burning fossil fuels in the country and surpassing the emissions of 100 nations combined. This year’s wildfires contribute to a multi-decade surge of CO2 emissions from Canada’s “managed” forests. After 2001, Canada’s forests emitted more CO2 than they absorbed, …

Global ecosystems risk collapse

Across the planet, rainforests are becoming savanna or farmland, savanna is drying out and turning into desert, and icy landscapes are thawing. Scientists have now recorded “regime shifts” like these in more than 20 different types of ecosystems where tipping points have been passed.