All technical information and scientific data released by US Government agencies (e.g., NASA, EPA…) are subject to sudden variation because of political expediency.
This caution also extends to the fidelity of the information provided by UN organizations (e.g., FAO, WHO…).
Point of No Return: Unless global energy consumption is reduced immediately to below 60EJ, mechanisms that are destroying the ecosystems including ozone holes, global heating, extreme climatic events... reach the point of no return, overwhelm the life support systems, render most cities uninhabitable by 2015 or earlier.