Category WATER CYCLE

The water cycle is one of Earth’s most fundamental processes—a continuous loop of evaporation, condensation, precipitation, and runoff that sustains all life on the planet. Yet this same system, which distributes fresh water across continents and ecosystems, also serves as…

Permafrost—frozen ground that covers roughly 25% of the Northern Hemisphere’s land surface—is thawing at an accelerating rate due to rising global temperatures. Its melting releases ancient stores of carbon dioxide and methane into the atmosphere, destabilizes ecosystems, and threatens infrastructure,…