(CNN) -- U.S. law enforcement views the case of three teenage Colorado girls who wanted to join ISIS as a good opportunity to study how the militant group recruits young people in the West, U.S. law enforcement officials told CNN.

Kano, Nigeria (CNN) -- At least 47 people were killed and 79 were wounded Monday by a suicide bombing outside a school in northern Nigeria, police said. The attacker was disguised as a student when he set off the explosion in a government boarding school in the town of Potiskum, police spokesman Emanuel Ojukwu said.

Based on the results tallied by 1:15 a.m. EST, voters in Arkansas, Nebraska and South Dakota -- all red-leaning states -- had approved proposals to raise their state-level minimum wages over the next few years. Arkansas: The minimum wage will rise from $6.25 an hour now to $8.50 by 2017.

Washington (CNN) -- After Sen. Tom Harkin likened her to Taylor Swift, Republican Senate candidate Joni Ernst is taking the pop star's advice. Just "shake it off." That's how Ernst responded Monday to Harkin's remarks last week that Ernst wasn't fit to be Iowa's senator just because she's "really attractive and she sounds nice."

(CNN) -- A night of triumph for San Francisco baseball fans was marred by shootings, fires and arrests. Police said at least two people were shot in San Francisco amid celebrations for the Giants' victory over the Kansas City Royals on Wednesday night, CNN affiliate KTVU said.

(CNN) -- The five victims in last week's shooting at a Washington high school were invited to the same lunch table by the shooter. "It's our understanding he (invited them) via texting," Snohomish County Sheriff Ty Trenary told reporters Monday.

Washington (CNN) -- A repeal of President Barack Obama's signature health care law is "not gonna happen" even if the GOP takes the Senate, Ohio Gov. John Kasich said.

Washington (CNN) -- There's a lot of information out there on the Ebola crisis. And now, the issue's gone political with increasingly vocal talk on Capitol Hill and in midterm campaigns calling for a travel ban to keep the disease from spreading in the U.S.

(CNN) -- The Texas hospital where a nurse contracted Ebola while caring for a patient had guidelines that were "constantly changing" and didn't have protocols on how to deal with the deadly virus," a nurses' union claims. "The protocols that should have been in place in Dallas were not in place, and that those protocols are not in place anywhere in the United States as far as we can tell," National Nurses United Executive Director RoseAnn DeMoro said Tuesday night.

Washington (CNN) -- In the exceedingly tight contest to become Iowa's next senator, Saturday's closely watched debate between Bruce Braley and Joni Ernst had the candidates trying to make each other blue by talking green. When it comes to energy, Ernst, a Republican state senator, and Braley, a Democratic congressman, both have controversial positions to defend to voters.

New York (CNN) -- Former pharmaceutical executive Gigi Jordan testified Wednesday that she knowingly gave a lethal concoction of drugs to her 8-year-old autistic son. Fighting back tears as she took the stand for the first time in her second-degree murder trial, Jordan admitted that she knowingly gave herself and her son, Jude Mirra, enough drugs to kill them both.

Washington (CNN) -- The man who jumped the White House fence earlier this month and breached the mansion's doors actually made it farther than originally thought, officials said Monday. White House fence jumper has PTSD, former stepson says Secret Service questioned over breach Armed man ran through White House Did Secret Service mishandle shooting?

(CNN) -- Five people were arrested as tensions flared again in Ferguson, Missouri, with people threatening officers, shooting at them, throwing rocks and bottles, and one person tossing a Molotov cocktail at a parking structure, police say. Two officers were injured, one struck by a rock below the eye, Capt.

New York (CNN) -- He's the war-ending President who, as of Tuesday, has ordered airstrikes in seven different countries (that we know of). President Barack Obama has always acknowledged there are times when military force is necessary. Even when he accepted his Nobel Peace Prize in 2009, he said there could be instances when war is "morally justified."

Washington (CNN) -- House Republicans will require the White House to provide a detailed plan for arming and training Syrian rebels to fight ISIS in exchange for giving it the OK to carry out the mission.

Washington (CNN) -- It was a speech that Barack Obama -- a war-stopping, Nobel Peace Prize-winning President -- never wanted to give. A year after he pulled back from threatened military attacks on Syria over chemical weapons, Obama told America he now would launch airstrikes against ISIS targets in the country wracked by civil war.

(CNN) -- President Barack Obama will address the country Wednesday to explain to the nation "what our game plan is going forward" in the fight against ISIS. In an interview that aired Sunday on NBC's "Meet the Press," Obama expressed confidence that the United States, with help from regional partners, will be able to wipe out the terror organization.

(CNN) -- Vice President Joe Biden on Wednesday issued a sharp warning to ISIS militants, saying after the United States is done grieving the death of two American journalists, their killers will have to answer for their actions.