The data was collected from five states and four major metropolitan areas, representing less than 10 percent of the U.S. population.

CNN: Study: U.S. cancer rates declining

Spanish home prices have fallen 30% from their peak five years ago, and prices have halved in some areas along the Mediterranean coast.

WSJ: In Spain, a Property Bargain-Hunter's Dream

He spoke in a conference call with several reporters on the eve of his Clinton Global Initiative University this weekend in San Diego, where 1, 100 students from 300 schools around the world and in every state will gather to create problem-solving pr0jects in five areas: education, environment and climate change, peace and human rights, poverty alleviation, and public health.

FORBES: Bill Clinton: American Education Is in a 'Disastrous' Situation--and We Need More Immigrants

One study, known as the Four Areas Trial, found reductions in cattle TB incidence ranging from 51% to 68% over a five-year culling period.

BBC: Q&A: The badger cull