The science is clear – the world is far off track from achieving global climate goals, threatening a sustainable future for all. The impacts of climate change and hazardous weather are reversing development gains and threatening the well-being of people and the planet, according to a new multi-agency report coordinated by the World Meteorological Organization (WMO).  Greenhouse gas concentrations are at record levels, fuelling temperature increase into the future.  The emissions gap between aspiration and reality remains high. Under current policies, there is a two thirds likelihood of global warming of up to 3 °C this century, says the United in Science report. Human-caused climate change has resulted in widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere. The year 2023 was the warmest on record by a large margin, with widespread extreme weather. This trend continued in the first half of 2024.  The United in Science offers much-needed grounds for hope. It explores how advances in natural and social sciences, new technologies and innovation enhance our understanding of the Earth system and could be game changers for climate change adaptation, disaster risk reduction and sustainable development.  International collaboration, comprehensive governance frameworks for integrated observing systems and innovative financing models are needed.