UNITED STATES

Tamerlan Tsarnaev identified 2011 murder victim Brendan Mess as his "best friend."

Sen. Patrick Leahy says America can welcome immigrants without compromising its security.

The 2013 immigration bill was unveiled to mixed reviews, some of them from members of the very committee now debating it.

Zubeidat Tsarnaeva, mother of suspected Boston bomber Tamerlan Tsarnaev, claims that she spoke to her son hours before he was slain in a deadly shootout last Friday.

In a new report, doctors warned teenagers about the various physical dangers of attempting the popular 'cinnamon challenge' YouTube trend.

AT&T has changed its shipping date for the Samsung Galaxy S4 to Tuesday, suggesting customers can expect to receive their handset as early as Friday.

Celebrity hairstylist Mark Townsend shared the details on actress Jennifer Lawrence's new hairstyle.

Beyoncé is selling a tour book featuring new photos of her latest world tour.

The federal government will soon consider “intangible assets” like creative royalties and research costs part of the country’s economic output.

Investigators, including the U.S. intelligence community, hope Dzokhar's throat heals completely and quickly, given the info he could furnish.

EBay CEO emailed millions of users of the company's online marketplace to rouse opposition to imminent federal sales tax legislation.

North Korea could take months to carry out its expected missile launch, South Korea’s defense ministry said on Monday.

Altoona, a suburb of Des Moines, Iowa, gets another big high tech project.

If U.S. Homeland Security has its way, Congress may soon authorize the study of a fee for all land crossings.

From Earth Day 1970 to Earth Day 2013, one of the world's first environmental campaigns has come a long way.

Investors estimate that March U.S. existing home sales rose to a 5.01 million unit annual rate.

Dzhokhar Tsarnaev was failing a number of his college courses before the April 15 terrorist attack that killed three people.

Boston Mayor Tom Menino Sunday morning to discuss the manhunt for the Boston Marathon bombers and how his city will move forward.

Was Tamerlan Tsarnaev brainwashed by an acquaintance into following radical Islam?

We cover lots of science here at IBTimes, but we can't get to everything. Here's a roundup of news we missed.

More evidence surfaced that indicates a radical turn by the two; also, the suspects' dad plans to travel to the U.S. "to clear up many things."