Earth is outside its "safe operating space for humanity" on most key measurements, study says

Earth is exceeding its “safe operating space for humanity” in six of nine key measurements of its health, and two of the remaining three are headed in the wrong direction, a new study said. Earth’s climate, biodiversity, land, freshwater, nutrient pollution and “novel” chemicals (human-made compounds like microplastics and nuclear waste) are all out of whack, a group of international scientists said in Wednesday’s journal Science Advances. Only the acidity of the oceans, the health of the air and the ozone layer are within the boundaries considered safe, and both ocean and air pollution are heading in the wrong direction, the study said.

tips

biodiversity 生物多样性（diversity 差异；bio- = life，生物）

diverse 不同的

nutrient 营养的（nutrition）

novel 小说；作为形容词有“新奇的”

compound 混合物；化合物（这里是人造化合物）

whack 猛击；削减

out of whack 失调；失常

acidity 酸性（acid 酸）

ozone layer 臭氧层

boundary 边界（bound 边界）