Do you have a right to know?

The world is facing a high probability, global warming-caused mass extinction event within the next few decades. Many governments already know this to be a high probability event and they are preparing for it secretly. 

Do a nation's citizens also have the right to know about the government's secret research and preparations so they can prepare as well?

Let us know your opinion.

Are our governments responsible for informing the general public that humanity is facing a highly probable, global warming-caused mass extinction event within the next several decades if, they know it to be true?