By Riham Alkousaa and David Stanway BERLIN (Reuters) - The Earth's life-support systems are facing greater risks and uncertainties than ever before, ...
STORY CONTINUES BELOW THESE SALTWIRE VIDEOSBy Riham Alkousaa and David Stanway
The study, expanding on a 2015 report, said the world had now crossed six of nine"planetary boundaries" - the safe limits for human life in areas such as the integrity of the biosphere, climate change and the use and availability of fresh water. The authors said crossing the boundaries did not represent a tipping point where human civilisation would just crash, but could bring irreversible shifts in the Earth's support systems.
"There are hundreds of thousands of human-made chemicals that are thrown into the environment now," Richardson said."We're constantly surprised by the effects of these human impacts." The current rate of species extinction is also estimated to be at least tens of times faster than the average rate over the past 10 million years, meaning the planet has already crossed the safe boundary for genetic diversity.
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