Stephen Hawking's warnings about humanity's future have proven eerily prescient, with each risk he highlighted accelerating since his death in 2018. The physicist's core argument, that humanity must become a multi-planet species before this century ends, is now gaining traction as a pragmatic survival strategy. Hawking's final years were marked by escalating warnings, each one a piece of a larger puzzle. He consistently emphasized the need to spread out into space to avoid the inevitable consequences of facing multiple threats simultaneously. Climate change, nuclear war, pandemics, genetically modified viruses, asteroid impacts, and artificial intelligence were among the specific risks he identified. Hawking's warnings were not hyperbolic but based on identifiable risks, and he was particularly concerned about low-probability, high-impact events. He believed that AI posed the most immediate threat, and his fears have been realized with the rapid advancement of AI capabilities. Climate change has also accelerated, with 2024 becoming the first year to exceed the 1.5°C threshold set by the Paris Agreement. The geopolitical landscape has weakened, with pandemic preparedness reverting and biosecurity concerns growing. While asteroid detection programs have improved, the overall picture is grim. Hawking's argument was a probability-based warning, not a prophecy. He argued that facing these risks on a single planet with no backup makes the probability of survival smaller with each passing decade. The idea of becoming a multi-planet species has shifted from a fringe concept to a serious survival strategy, with risk researchers, biosecurity experts, and AI safety advocates embracing it. Hawking's warnings have been confirmed, and the need for a multi-planet approach is now widely recognized. He would likely argue that the time to act is even more urgent than he initially thought, as Earth becomes the wobbly basket holding all our eggs.
