Because of the increasingly dire warnings of climate experts that climate change may soon reach an irreversible tipping point, the significant increase in the frequency and severity of heat waves, droughts, wildfires, storms, floods, and other climate-related events, and the failure so far of governments and other institutions to make adequate changes to address the threats, many concerned people are trying to awaken others to the dangers with the statement that “There is no Planet B.” This article discusses the climate threats and how risks of a climate catastrophe ...