'Grave and mounting threat': IPCC again raises alarm that climate impacts are proving worse than feared

The world faces unavoidable and worsening climate hazards over the next two decades as global temperatures are driven up by human activity, with "irreversible impacts" on humans and ecosystems expected even if the global economy achieves the unprecedented feat of only marginally overshooting the 1.5°C temperature goal agreed by governments. Meanwhile, worst case scenarios where temperatures spiral past the 2°C goal set in the Paris Agreement could result in widespread loss of productive agricultural land, every second known plant or animal species threatened, and catastrophic socio-economic...