来源：ScienceDaily Sustainability News
For over two decades, satellites have quietly documented a major crisis unfolding beneath our feet: Earth’s continents are drying out at unprecedented rates. Fueled by climate change, groundwater overuse, and extreme drought, this trend has carved out four massive “mega-drying” regions across the northern hemisphere, threatening freshwater supplies for billions. Groundwater loss alone now contributes more to sea level rise than melting ice sheets, and unless urgent global water policies are enacted, we could face a catastrophic freshwater bankruptcy.