News tagged with congestion

Predicting when lightning will strike

When something is unlikely to happen, people often say that there is a greater chance of being struck by lightning. The fact is however that lightning does strike, and is one of the leading weather-related ...

Aug 22, 2013
4 / 5 (3) 0

Explainer: What are chemical weapons?

There was chaos on the streets of Halajba in March 1988. In this corner of Iraq, at the time Iraqi Kurdistan, people had suddenly started experiencing cold-like symptoms – tight chest and nasal congestion. ...

May 24, 2013
5 / 5 (2) 1

Evolution shapes new rules for ant behavior

In ancient Greece, the city-states that waited until their own harvest was in before attacking and destroying a rival community's crops often experienced better long-term success.

May 15, 2013
5 / 5 (4) 0 | with audio podcast