Scientists' observations show that: (1) global warming and Antarctic ice blocks are melting; (2) if there is no human destructive speech, then the ozone hole will not expand. According to satellite cloud images and other data, relevant experts analyzed: (1) If both of the scientific observations are accurate, then the Antarctic ice is not melting; (2) If at least one of the scientific observations is inaccurate, then there is no global warming and the ozone hole is expanding; (3) Scientific observations are two At least one of the terms is accurate,. According to the analysis of relevant experts, it can be launched. ['Global warming.', 'Antarctic ice cubes are melting.', 'The ozone hole will not expand.', 'Destructive human activities.']