A new study has confirmed that the Gulf Stream, a crucial ocean current that helps regulate climate and sea levels, is weakening. The flow of warm water through the Florida Straits has slowed by 4% over the past four decades. This slowdown has significant implications for the world's climate, and scientists are concerned that it may be a sign of further weakening to come.
Bang on. The Earth's population in 1950 was about 2.5 billion. We have more than tripled that number now, largely enabled by agricultural, medical, and transportation technology powered by stored energy in the form of fossil fuels. Global ecological footprint analysis shows that we "overshot" Earth's sustainable capacity limit in around 1970.
It is impractical (and probably impossible) with current technology to sustain >8 billion people on Earth without fossil fuels. And, it is impossible to keep burning fossil fuels without inducing devastating climate change. So, unless we can replace almost all fossil fuel burning with another incredibly powerful and non-harmful energy source (like fusion, I guess?), we are screwed. I agree with you that the ecological debt we have incurred will likely be paid in lives lost to starvation and conflict over food.