Explainers

An earth-penetrating weapon (EPW) is designed to hit the earth at high speed and penetrate into the ground before exploding.

Both the overall warming and the disproportionate increase in minimum temperatures have contributed to a lengthening of the warm (growing) season, especially in mid- to-high latitudes.

"Abrupt climate change" describes changes in climate that occur over the span of years to decades, compared to the human-caused changes in climate that are occurring over the time span of decades to centuries.

Although no comprehensive treaty about space weapons is in effect, a legal framework does exist.

Warmer global temperatures are expected to cause an intensification of the hydrologic cycle, with increased evaporation over both land and water.

Most glaciers in the world, are more sensitive to temperature than to other climatic factors.

An increase in global temperatures will lead to an intensification of the hydrological cycle.

The geographic ranges of most plant and animal species are limited by climatic factors. Any shift in the magnitude or variability of these factors in a given location will impact the organisms living there.

Global climate change is one of the most serious challenges facing us today.

Despite problems, the system has continued to operate at partial capability.

Information on renewable energy, including wind and solar power; nuclear-power safety issues and work of the Union of Concerned Scientists to switch America to clean, safe, renewable, and affordable power.

The Public Utility Holding Company Act (PUHCA) of 1935 is the only law that prevents utility holding companies from subsidizing unregulated business activities from profits obtained from their regulated business activities and captive customers.