Many Americans would squirm when thinking of eating an insect. But a fledgling movement praising insects' health benefits and low environmental impact is encouraging Americans to swap steak sandwiches for salted crickets tostadita.

Since 1980, Liberia has tackled a cycle of civil war, claiming over 200,000 lives while developing an impossible water crisis. In partnership with the Pulitzer Center on Crisis Reporting, correspondent Steve Sapienza and two local journalists unearth why the government and aid agencies can't crack the country's water problems.

In other news Tuesday, another three Secret Service agents lost their jobs as a result of the ongoing prostitution scandal ahead of President Obama's Colombia trip. A total of nine have now been forced out and three have been cleared. Also, a Kofi Annan spokesman accused Syria's government of subverting U.N. observers' efforts.

An unusually high number of dead dolphins - including stillborn and infant calves - have washed up along the Gulf of Mexico shores in the two years since the Deepwater Horizon oil rig exploded into flames, unleashing tens of thousands of barrels of oil into the ocean.

Experts say the whale may have been exposed to a bomb or sonar; the Navy denies responsibility.

Despite residents' fears, scientists say they can't link health woes to gas wells in Dish, Texas.

A quest to find answers on fracking pollution becomes too polarizing to pursue.

From truck traffic to toxic water management, fracking raises new concerns for industry and locals.