Nutrition, food safety and local norms among many considerations that aid groups weigh before and during disaster response.
The 5.4 magnitude earthquake suggests that even small volumes of water can trigger large events.
Deep layers may reveal prehistoric earthquakes, showing how often they strike New England.
Scientists are training computers to help us stop asteroids from crashing into our planet.
An exceptionally strong El Niño may have caused 1876-1878 famine that killed tens of millions.
Scientists can now link "acts of God" to climate change. That could give victims the power to hold someone accountable, say lawyers.