Populations of frogs, salamanders and other amphibians are declining at an average rate of 3.7 percent each year, according to a U.S. Geological Survey study released this week. Researchers say the study is the first to calculate how quickly amphibians are disappearing in the United States.

"If the rate observed is representative and remains unchanged, these species would disappear from half of the habitats they currently occupy in about 20 years," according to the USGS.

Saying that "those who commit sexual assaults are not only committing a crime, they threaten the trust and discipline that make our military strong," President Obama on Friday urged Naval Academy graduates to help bring an end to a disturbing series of such offenses.

"They've got no place in the greatest military on earth," Obama said during the commencement address he delivered at the academy's Annapolis, Md., campus.

Throughout Kobo Town's new album Jumbie in the Jukebox, frontman Drew Gonsalves declares his love for the past even as his feet are firmly planted in the present. The music of the Toronto band can drift between classic Caribbean pop styles and even verge on hip-hop, but the singer's perspective remains sharply focused, wry and witty. The song "Postcard Poverty," for example, ribs tourists for whom tropical slums become an exotic backdrop to fun-in-the-sun adventures.

President Obama is once again calling for the prison at Guantanamo Bay to be shut down, even though new polls suggest most Americans want it to stay open. But the chorus of critics has gained one surprising member: former Guantanamo Chief Prosecutor Morris Davis. Host Michel Martin talks with Davis about why he now feels the facility should be closed.

California just unveiled a wide array of choices for the 5.3 million people expected to qualify to buy coverage through its online marketplace established by the federal health overhaul.

It's the first disclosure of prices in the nation's most populous state for individual health insurance that complies with the Affordable Care Act, and the menu of affordable options surprised some consumer advocates and analysts who had been expecting premiums to be much higher.

Irish banking officials should have known there were problems with the controversial 10-euro coin commemorating James Joyce, according to Ireland's RTE News. The coin misquotes the author's Ulysses, and bears an image of Joyce that his estate did not approve.

Two men were arrested and removed from a Pakistan International Airlines passenger jet Friday. It had been on its way from Lahore, Pakistan, to Manchester, England, when something that happened aboard led authorities to scramble Royal Air Force fighter jets and divert the passenger plane to London Stansted Airport.

(We most recently updated the top of this post at 6:45 p.m. ET.)

An explosion followed by gunfire in Kabul on Friday claimed the lives of at least two attackers and wounded a small number of civilians. The Taliban claimed responsibility for the attack, which appeared to have been aimed at offices of the International Organization for Migration and stretched over several hours as Afghan security forces tried to hunt down those responsible.

As night fell in Kabul, it was unclear whether the incident was over or not.