The Solar System will become much more impoverished: eight planets and no intelligent life.

If you follow the news on climate change they are predicting global temperature rises much higher than expected: just 5-6 years ago they expected a 2 degree Celsius increase, and today it's more like a 10 degree increase by century's end. By 2020 it could be 15,20, or even 30 degree increase in the same period. The warming of permafrost will release more CO2 and methane, which will multiply the effects much more than even the best scientists will expect with the best accuracy. There will be mass extinctions of vital crops like corn and wheat, fresh water will become more and more scarce in the space of a few year, and then there will be massive cholera and malaria epidemics as a result. It will literally take millions of years for nature to reabsorb the CO2 emissions we have pumped into the atmosphere in the last 50 years alone. In geologic terms this destruction of all multicelluar life is not just quick, it's faster than instantaneous, it's as if all matter in a 50 mile radius just vanished in one ten trillionths of a second.