Let me give you an example. Back in the 1990s the ozone hole was considered a serious problem. Scientists argued that with unchecked emission of CFCs the hole

Let me give you an example. Back in the 1990s the ozone hole was considered a serious problem. Scientists argued that with unchecked emission of CFCs the hole will grow larger and cause serious harm. Limits on CFCs were implemented, the hole stopped growing. Pfft, scientists, warning against a disaster, which never comes because we worked to prevent it. What do they know?