New research suggests that ambitious global targets to halt nature loss may already be out of reach because the impact of climate change and habitat loss on animal populations has been underestimated. Scientists suggest that preventing extinctions may take longer than previously thought, so urgent action is needed to prevent global biodiversity targets from becoming unattainable. The researchers found that previous modelling largely neglected the time lag of decades before the impact of factors such as climate change and habitat loss becomes apparent. The finding suggests that the world may be closer to the biodiversity loss abyss than previously thought. “For large mammals and birds, we have seen delayed effects of up to 40 years,” Dr Freeman told BBC News. “And that means the longer we wait to take action, the longer it will take before we see any response.” Despite these sobering findings, research also suggests that immediate action on issues such as unsustainable hunting and overexploitation of natural resources can bring immediate and far-reaching benefits. The urgency of the situation is clear, with more plant and animal populations now at risk of extinction than at any time in human history. In a bid to tackle this biodiversity crisis, 188 governments, including the UK, signed a landmark agreement in December committing to global targets by 2030. These targets range from halving global food waste to phasing out subsidies that negatively impact biodiversity. New research highlights the importance of rapid and comprehensive action to preserve the planet’s biodiversity and ensure the health of our ecosystems for future generations. (Eric Ralls)