The states with the most gun owners
A new study from BMJ found gun ownership rates varied widely in the 50 states and D.C. High Gun
Read MoreEuropean air quality forecast
The above prediction is based on composite meta model, computed using several Air Quality Forecasting Systems.
Read MoreActual Countries the US is treaty-bound to defend
Actual Countries the US is treaty-bound to defend, according to the USA State Department and Wikipedia.
Read MoreHigh school graduation rates from coast to coast
District graduation rates for the class of 2013 vary greatly across the country and, often, within states.
Read MoreEndangered species
About 900 species of plants and animals have gone extinct in the last five centuries, ans more then 10,000 others
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