La Puna, a high-altitude plateau straddling Argentina, Bolivia, and Chile, is not for the faint of heart. Visitors must endure a 10-hour drive from the closest city, battle altitude sickness at heights of 3,200 meters or more, withstand harsh ultraviolet radiation and wildly fluctuating temperatures, and manage without—gasp—Wi-Fi or cell …
Read More »The World's Soils Are Becoming Dangerously Degraded, but Rare Microbes Offer Hope
