Part 3/13:
The mainstream view has consistently urged massive economic overhaul, emphasizing renewable energy sources, predominantly wind and solar. Nonetheless, Hansen points out that the planet’s geological history spans billions of years, with humans only present for a fraction of that timeline—roughly 300,000 years—and accurate temperature records only for the past 150 years. This limited data set, along with natural cyclical climate variations documented through tree rings and ice cores, suggests that climate change is far more complex than the current narrative admits.