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As communities, such as Dallas, Texas, contemplate doing aerial spraying to control mosquitoes carrying West Nile virus, many people are expressing concerns about how the pesticides will affect their health, and the health of their environments. Melissa Blocks speaks to Dr. Robert Peterson, professor of Entomology at Montana State University.

Surinder Singh and his son Rupinder spent much of their lives in Canada before moving to the U.S. in 1992. As practicing Sikhs, they wear turbans. Maintaining that tenet of their faith has made for some challenging experiences.

The attack at a Sikh temple by a gunman with ties to white supremacists has raised questions about domestic terrorism — and what law enforcement is doing to stop it. In recent years, the Internet, the worsening economy and changing demographic patterns have given new voice to hate groups.

An Egyptian court has sentenced 21 defendants to death over a deadly soccer riot last year, adding fuel to the violent protests that continued to flare across the country on Saturday.

Making a candy dispenser head that looks just like you is pretty cool in its own right. But some people are taking 3-D printers much further, using the new technology to spit out actual food, like chocolate — and maybe one day, raw meat.

President Obama has begun his second term with great momentum, but history warns that he will be challenged to sustain himself by forces all around — and within — him.

Treating people for HIV isn't just beneficial for those infected but also helps the entire community. Two studies show that where HIV drugs are widely available, the risk for new HIV infections drops dramatically and overall life expectancy increases by more than a decade.

People's genes can affect how they'll respond to blood thinners and cancer drugs. But inaccurate results can lead to bad medical decisions. Regulators are pushing back against a company that has been among the most aggressive in marketing personal genetic testing directly to consumers.

Saturday is the day the White House promised the website for the Affordable Care Act will work for the "vast majority of users." NPR's health policy correspondent Julie Rovner explains what that means, and whether the deadline is going to be met.

Some argue that spying on vast numbers of innocent people is a violation of privacy, as well as a waste of security resources. But others argue that mass electronic surveillance is vital to the fight against terrorism. A team of experts debates for the latest Intelligence Squared U.S.