Due to human influence, the earth is now in the sixth mass extinction.
Plant paleontologist Vivi Vajda wonders which plant species have the greatest chance of survival. Perhaps the traces from 66-million-year-old fossils can provide answers to how we can preserve species that are threatened by today's climate change. Follow along in her research, which takes place in Madagascar, among other places. Madagascar is a unique place where the soil and soil from the last mass extinction in some places are visible very close to today's land surface.

During the last 500 million years, most of the Earth's species have been wiped out as many as five times. The last mass extinction 66 million years ago was caused by an asteroid and led to the extinction of the dinosaurs and of many plant species.