Obama spoke in Denver Thursday as part of a campaign event for Udall, who is engaged in a heated battle with his Republican opponent Rep. Cory Gardner.
Johann Lamont is to stand down as leader of the Scottish Labour Party with immediate effect after criticising her Westminster colleagues.
Google executive Alan Eustace breaks the world altitude record for a parachute jump set two years ago by Felix Baumgartner.
Health officials fear many people have been exposed to Mali's first Ebola victim, a girl who showed symptoms while travelling and has since died.
Two nurses infected with Ebola while treating a patient in Dallas are declared free of the deadly virus, a day after the first infection in New York.
Authorities in Virginia identify the remains of a British-born university student who disappeared last month after a night out with friends.
Shareholders in US banana distributor Chiquita vote against a merger deal with Irish rival Fyffes in favour of a higher offer.
Vladimir Putin says for the first time that Russia helped Ukraine's ex-President Viktor Yanukovych to flee after he was ousted in February.
One person was shot dead and four students wounded by a student who also died at a school in the US state of Washington, police say.
Nine-time French Open champion Rafael Nadal calls an end to his 2014 season as he prepares to undergo appendix surgery.
A complaint that human rights regulations were breached when the Formula 1 Grand Prix was staged in Bahrain "merits further examination", a UK government panel says.
As many as six people are reported injured after a student opened fire at a school north of Seattle, in the American state of Washington.
A mandatory quarantine for health care workers returning from West Africa could be the next step the federal government takes in trying to prevent Ebola from spreading on American soil.
North Korea may be capable of fielding a nuclear-armed missile that could reach U.S. soil, but because it has not tested such a weapon the odds of it being effective are "pretty darn low," the commander of U.S. forces in South Korea said Friday.
At least 29 Egyptian soldiers are killed in a suspected jihadist car bomb attack and a shooting, Egyptian officials say.
Members of the governing BJP's youth wing vandalise a coffee shop, decrying meetings there between boys and girls.
The U.S. is investigating claims that Islamic State militants used chemical weapons against Iraqis last month, in what would be a serious escalation of the fighting in the region.
Flashing the easy smile of someone whose name isn't on the Election Day ballot, Mitt Romney has never been so politically popular. He’s traveled the country – 23 states by his count – in recent months to lend support to fellow Republicans in advance of November’s midterm election.
Former White House counsel Kathryn Ruemmler has told President Barack Obama she doesn't want to be nominated for attorney general, after he asked her to consider succeeding Eric Holder, people familiar with the discussions told The Associated Press on Friday.
Ukraine and Russia find "consensus" on a deal to end their gas dispute, according to the boss of Ukraine's state gas firm.