Musician finally masters extraordinarily difficult guitar part he heard on a record, only to learn the recording had been made with more than one guitar.

Mayor Adrian M. Fenty attends the ceremonies for three of the first gay couples to legally marry in the district.

As a cellist and soloist performed Billy Joel's "Just the Way You Are," Darlene Garner and Candy Holmes walked down the aisle Tuesday morning and became among the first gay couples to legally marry in the District of Columbia.

John G. Roberts Jr. tells law students that the president's rebuke of a ruling on corporate campaign funding and the subsequent cheering at the State of the Union address were 'very troubling.'

Chief Justice John G. Roberts Jr. told law students Tuesday that he found it "very troubling" to be surrounded by loudly cheering critics at President Obama's State of the Union address, saying it was reason enough for the justices not to attend the annual speech to Congress.

Former Rep. Eric Massa, a New York Democrat who resigned his seat Monday amid a sexual harassment investigation, goes on TV to defend himself.

A day after resigning his seat in the face of a House ethics investigation, former Rep. Eric Massa took to the airwaves Tuesday to deny that he had touched a male aide in a sexual manner.

American Colleen R. LaRose, 46, is accused of using the Internet to recruit and assist Muslim terrorist operations in Europe and Asia.

Using e-mail, YouTube videos, phony travel documents and a burning desire to kill "or die trying," a middle-aged American woman from Pennsylvania helped recruit a network for suicide attacks and other terrorist strikes in Europe and Asia, according to a federal grand jury indictment unsealed Tuesday.

After the procedure, the donors live as long or longer than those in the general population.

People who donate a kidney to a sick friend or relative live at least as long as others in the general population and may live somewhat longer because they tend to take better care of themselves after the procedure, researchers reported Tuesday.

A judge in Texas has rescinded his highly criticized ruling that the death penalty is unconstitutional.

A team of scientists at MIT have discovered a previously unknown phenomenon that can cause powerful waves of energy to shoot through minuscule wires known as carbon nanotubes. (2010-03-08)

A new EEG study conducted on college students at American University found they could more highly activate the default mode network, a suggested natural "ground state" of the brain, during their practice of the Transcendental Meditation technique. (2010-03-05)

Researchers at the Louisiana State University Health Sciences Center have figured out how ATP is broken down in cells, providing for the first time a clear picture of the key reaction that allows cells in all living things to function and flourish. (2010-03-01)

Cornell researchers have found a protein that may lead to a new way to control mosquitoes that spread dengue fever, yellow fever and other diseases when they feed on humans: Prevent them from urinating as they feed on blood. (2010-03-04)

Bone marrow transplant patients say two of the most debilitating side effects of the treatment are nausea and vomiting caused by chemotherapy and radiation. (2010-03-01)

If you aren't getting a good, consistent and regular night's sleep, a new study suggests it could reduce your ability to handle oxidative stress, cause impacts to your health, increase motor and neurological deterioration, speed aging and ultimately cut short your life. (2010-03-02)

Biologging - the use of miniaturized electronic tags to track animals in the wild - has revealed previously unknown and suprising behaviors, movements, physiology and environmental preferences of a wide variety of ocean animals. (2010-03-04)

A heart patient's own skin cells soon could be used to repair damaged cardiac tissue thanks to pioneering stem cell research of the University of Houston's newest biomedical scientist, Robert Schwartz. (2010-03-03)

The flowering plant - purple loosestrife - has been heading north since it was first introduced from Europe to the eastern seaboard 150 years ago. (2010-03-01)

A worldwide team of researchers, including 10 from Texas A&M University, have for the first time created a particle that is believed to have been in existence immediately after the creation of the universe - the so-called "Big Bang" - and it could lead to new questions and answers about some of the basic laws of physics because in essence, it creates a new form of matter. (2010-03-05)

A team of Michigan State University scientists - using a new cooling method they created - has uncovered the inner workings of a key iron-containing enzyme, a discovery that could help researchers develop new medicines or understand how enzymes repair DNA. (2010-03-01)

Efforts to prevent childhood obesity should begin far earlier than currently thought-perhaps even before birth-especially for minority children, according to a new study that tracked 1,826 women from pregnancy through their children's first five years of life. (2010-03-01)

In one of the most comprehensive global studies of marine reserves, a team of natural and social scientists from the University of Rhode Island and other institutions has found that community involvement is among the most important factors driving the success of marine reserves. (2010-03-02)