Experts warn that a second term for Donald Trump as president could severely undermine global climate efforts, potentially leading to the U.S. withdrawing further from international agreements like the Paris Accord. Climate scientists emphasize that the U.S. must take substantive action to achieve climate goals, and fear that Trump's policies could embolden other major polluters like China to lessen their own commitments. The upcoming COP29 climate summit will be critical as countries strive to maintain leadership in climate action despite Trump's anticipated rollback of environmental regulations. Concerns extend beyond climate change, as Trump's administration may deprioritize vital research in areas such as renewable energy and public health, further threatening scientific progress. Ocean policy is also at risk, with Trump likely to push for increased offshore drilling and weakened protections for marine ecosystems. Overall, the scientific and climate advocacy communities express alarm over the potential setback to both climate action and environmental research under Trump's renewed leadership.