Natural disasters
An exceptionally strong El Niño may have caused 1876-1878 famine that killed tens of millions.
Tethered balloons equipped with sophisticated cameras can survey threats and damage from an elevated perspective.
Scientists can now link "acts of God" to climate change. That could give victims the power to hold someone accountable, say lawyers.
A former storm chaser recounts being in the path of a tornado.
A panel of researchers discussed the need for a system to warn the public about health risks from wildfire smoke, similar to the National Weather Service's heat advisory.
Could this repeated signal be new tool for predicting earthquakes from volcanic activity?
Alterations in the rock formations' growth in Indiana cave could provide clues about past earthquakes in the Midwest.
An undergraduate college student may have found a way to warn people up to 30 minutes in advance that a tornado is on the way.
Misconceptions and false information dominated with 185,000 tweets during big storm.
A new warning system gives the public more advance notice of storm surge threats.