News
Lake Mead water crisis is exposing volcanic rock from eruptions 12 million years ago
Scientists are taking advantage of Lake Mead’s low water level to study sediment that hasn’t been exposed in nearly a century.
Related Knowledge Center: Climate science
State of Play
What began as a theory in the 1890s — that industrial emissions of carbon dioxide could increase global temperatures — had progressed to a scientific fact a century later. Scientists across a range of disciplines are studying the impact of the still-growing concentration of carbon dioxide and other so-called “greenhouse gases” in the atmosphere as they call for industrial and governmental policies to slow, then halt, the warming of the planet.