The Warning in the Stars By David Archibald

This analysis does a nice job showing that there is a strong correlation to swings in the Earth's temperatures and the Sun.

If climate is not a random walk, then we can predict climate if we understand what drives it. The energy that stops the Earth from looking like Pluto comes from the Sun, and the level and type of that energy does change. So the Sun is a good place to start if we want to be able to predict climate. To put that into context, let’s look at what the Sun has done recently.