Space and survival
A related observation is that the window of opportunity for doing this may be limited due to the decreasing amount of surplus resources that will be available over time as a result of an ever-growing population."[6] Toby Ord argues in The Precipice that some such risks include unaligned artificial general intelligence, pandemics (notably from bioterrorism), catastrophic climate change, and global nuclear warfare.The human lineage of genus Homo has reduced from several species co-existing on Earth to just one — all others became extinct before the end of the last Ice age.For example, if a massive impact event occurred on Earth without warning, the human species could possibly become extinct; its art, culture and technology would be lost.According to researchers from the University of Rochester Medical Center, a radiation equivalent to a mission to Mars can cause serious brain damage such as cognition problems and Alzheimer's disease.