Study: Humanity 'dangerously close' to climate tipping points

Water scarcity and species extinction can lead to irreversible and life-threatening impacts if humanity does not change course, according to a new report by the United Nations University in Bonn published on Wednesday.

"As we indiscriminately extract our water resources, damage nature and biodiversity, and pollute both Earth and space, we are moving dangerously close to the brink of multiple risk tipping points that could destroy the very systems that our life depends on," lead author Zita Sebesvari told dpa.