Since the 1970s scientists have been telling us that based on Earth's natural glacial cycles we've been due—even overdue—for another prolonged period of global cooling. Visible evidence from the sun provides a more immediate warning. Sunspots have all but disappeared. (1)
In the past few weeks there's been a spate of news stories about a little ice age coming (2), and the importance of the sun's impact on climate. (3)
Solar activity is now falling more rapidly than at any time in the last 10,000 years. (4)