Democratic presidential candidate Hillary Clinton's proposal to spent $2 billion a year to battle Alzheimer's disease was welcomed Tuesday by Las Vegas researchers who say effective treatments are desperately needed given the growing number of elderly affected by the disease.

Attention dog-loving singles! A new study has confirmed what so many dog park visits and “yappy hours” and gimmicky Instagram accounts have already made so obvious: Your furry friend can help get you laid.

Tuesday night may not have been an evening in paradise for the nine Republican presidential candidates who took the national debate stage at the Venetian Hotel-Casino on the Strip. Hosted by CNN and moderated by Wolf Blitzer, this was the last debate of 2015 before the election year begins.

Terrorism has emerged as the top concern among Republican primary voters, and Donald Trump is seen as the candidate best equipped to combat it. This is the main reason Trump has popped in the polls since his call last week for a temporary ban on Muslim immigration into the United States.

As he readies for tonight’s debate, Donald Trump’s improbable march to the GOP nomination could hit stumbling blocks in the early-state primaries, where his base is unproven and social conservatives are gravitating toward his biggest competitor, political watchers warn.

After five Republican presidential debates, Donald Trump's rivals still haven't figured out how to land a fatal blow against their party's front-runner. That was true again on Tuesday, as the New York businessman survived the latest meeting of the party's White House contenders as the discussion focused on the complex issue of foreign policy, a topic on which he's demonstrated little mastery.

Scientists trying to untangle the human evolutionary family’s ancient secrets welcomed a new set of tantalizing and controversial finds this year. A series of fossil discoveries offered potentially important insights into the origins of the human genus, Homo. Most notably, a group of South African fossils triggered widespread excitement accompanied by head-scratching and vigorous debate.

The organizations America's Voice and Latino Decisions on Monday announced a project that will seek to mobilize Latino voters in 10 key states with an eye toward helping the Democrats recover control of the Senate in 2016.