Samantha Raphelson

An Atlantic Ocean current that helps regulate the global climate has reached an 1,000-year low, according to two new studies in the journal Nature.

While scientists disagree about what's behind the sluggish ocean current, the shift could mean bad news for the climate. The Atlantic Meridional overturning circulation [AMOC] – often called the conveyor belt of the ocean – exchanges warm water from the equator with cold water in the Arctic.

The growing momentum for tighter gun control after the deadly school shooting in Parkland, Fla., is highlighting the National Rifle Association's history of aggressively confronting challenges to what it regards as Second Amendment rights.

Federal limits on both research into gun violence and the release of data about guns used in crimes are powerful reminders of the lobbying group's advantages over gun control activists. For decades, the NRA pushed legislation that stifled the study and spread of information about the causes of gun violence.

The Community Relations Service was born out of one of the most contentious periods in American history — the civil rights movement of the 1960s.

The Justice Department peacemaking office established by the 1964 Civil Rights Act has provided communities dealing with racial or other tensions with professional mediators and other confidential services to help resolve conflict.

Updated on Sunday at 10:00 a.m. ET

Hundreds of thousands of students, teachers, parents and victims rallied in Washington, D.C., and across the country on Saturday to demand tougher gun control measures, part of a wave of political activism among students and others impacted by school shootings.

The Trump administration accused Russia on Thursday of orchestrating a campaign of cyberattacks that targeted the U.S. power grid.

Since at least March 2016, Russian hackers attempted to infiltrate numerous sectors of American infrastructure, including energy, nuclear, commercial facilities, water, aviation and manufacturing, according to a Department of Homeland Security report published on Thursday.

A growing shortage of psychiatrists across the U.S. is making it harder for people who struggle with mental illness to get the care they need — and the lack of federal funding for mental health services may be to blame.

The film "Black Panther" has inspired black cosplayers around the country to be more visible within the cosplay community.

Cosplay, which is short for "costume play," is when people wear often-handmade costumes to embody fictional characters from comic books and popular movies like Captain America and Star Wars. But black and other non-white cosplayers often feel excluded because non-white characters are rarely featured prominently in the fantasy worlds of comics. They are often relegated to the roles of sidekicks or villains rather than the superheroes.

Nearly 40 years of violent conflict is driving a growing mental health crisis in Afghanistan.

Vice President Mike Pence is facing backlash for his staunch efforts to ignore North Korean officials at the Winter Olympic Games, even as the two Koreas continued their temporary truce, marching and competing as one team.

Pence's cold demeanor toward the North Koreans at the Pyeongchang games was overshadowed by friendly cooperation between the North and South. The vice president also drew criticism from some openly gay members of Team USA, who questioned his role at the Olympics due to his anti-LGBT views.

Alabama filed a lawsuit in federal court on Tuesday against OxyContin producer Purdue Pharma LP claiming the drug company is fueling the opioid epidemic by deceptively marketing prescription painkillers.

The state alleges that Purdue failed to accurately portray the risks and benefits of opioids, which enabled doctors to widely prescribe them in the treatment of pain. Alabama becomes the latest in a flood of lawsuits by states, counties and cities against drug makers in response to the opioid crisis.

If you've ever tried to catch an Uber on a rainy day during rush hour or after the ball drops on New Year's Eve, you're familiar with dynamic pricing. That's when the price of a ride costs more or less depending on the demand for drivers.

The pricing strategy has long been used by other sectors of the travel industry, such as airlines and hotels, to balance supply and demand, and last month, a luxury restaurant in London rolled out a similar model.

The death of a former major league baseball player in his native Venezuela this week is renewing concerns over the Latin American country's growing health crisis amid ongoing economic and political turmoil.

Coca-Cola introduced four new fruit-flavored versions of Diet Coke this week in an effort to entice former soda drinkers and LaCroix-guzzling seltzer lovers.

The new flavors — Feisty Cherry, Twisted Mango, Ginger Lime and Zesty Blood Orange — are sold in slimmer, redesigned cans. They were launched as part of the beverage company's endeavor to offset slumping Diet Coke sales, which have steadily declined since the height of soft-drink consumption in the mid-2000s.

Lawmakers in the United Kingdom are debating a new tax on disposable cups in an effort to cut down on waste.

While the so-called "latte levy" is controversial, the goal is to replicate the success of Britain's tax on plastic bags; their use has declined by 80 percent since the tax was introduced in 2015. Proponents of the tax say it would encourage people to carry around their own reusable cups rather than use disposable ones, which in their current form are difficult to recycle.

Since last May, thousands of Haitian immigrants have been steadily pouring into Canada, mostly on foot at the Quebec border, in an attempt to flee aggressive anti-immigration policies by the Trump administration.

It's that time of year when a simple walk down the street can be a treacherous undertaking because of the icy sidewalks.

Emergency rooms in the U.S. treat more people injured in falls than for any other kind of injury, according to the Agency for Healthcare Research and Quality. The agency estimates that falls account for more than a third of all injury-related ER visits. Even though most of those injuries happen to older people, falls happen at any age and can cause serious injury.

Palestinian Christians attacked the convoy of the Greek Orthodox Patriarch of Jerusalem during a visit to Israeli-occupied West Bank on Saturday to protest the church's controversial property sales to Jewish and Israeli buyers.

The number of migrants who died crossing the Mediterranean Sea surpassed 3,000 for the fourth year in a row, despite an overall drop in the number of refugees making the journey.

The International Organization for Migration has called the Mediterranean "by far the world's deadliest border," as more than 33,000 migrants have died at sea trying to enter Europe since 2000.

Updated at 1:07 p.m. ET

President Trump insisted Saturday that he is "a very stable genius," following the recent publication of a book that raises questions about his mental state and fitness for office.

Speaking to reporters at Camp David on Saturday, Trump called Michael Wolff, author of Fire and Fury: Inside The Trump White House, "a fraud" and reiterated his earlier claim on Twitter that Wolff is not trustworthy.

Forty-three of the largest public universities in the U.S. do not track student suicides, according to recent findings from The Associated Press, despite efforts to improve mental health on campus.

Many pet owners are aware of the dangers to dogs and cats in extreme heat, but the risks can be even greater during a cold snap.

Jennifer Brea was a PhD candidate at Harvard University when flu-like symptoms and a high fever brought her down for more than five years.

After her condition stumped several doctors, the 28-year-old filmed herself on her iPhone, including an episode when she was unable to move or speak. She showed the footage to her doctor, and in 2012 – a year and a half after her initial fever – she was diagnosed with a condition called myalgic encephalomyelitis, or chronic fatigue syndrome.

Over 26 hours and across 39 time zones, the world is celebrating the end of 2017.

New Year's celebrations kicked off in Samoa, Christmas Island and New Zealand as those countries were the first where the clock struck midnight. Here in the U.S., many events are set to occur under heightened security, including in Las Vegas, which is still reeling from the deadliest mass shooting in the nation's modern history three months ago.

The Douglas County Sheriff's office south of Denver says a suspect fired more than 100 rounds in a shooting that killed one police officer and wounded four others, along with two civilians, on Sunday morning.

The officers were shot after responding to an initial report of domestic violence at the Copper Canyon Apartments just after 5 a.m., Sheriff Tony Spurlock said in a news conference.

Following in the footsteps of the Oregon Trail fur traders, Americans are again flocking to the West in great numbers, according to new data from the U.S. Census Bureau. But of course, this time they aren't making the journey in covered wagons.

The Amtrak passenger train that derailed on Monday south of Tacoma, Wash., was traveling on tracks that were equipped with technology to prevent accidents, but the safety feature was not activated, according to the rail service.

Deadly attacks in Afghanistan and Pakistan are highlighting the escalation of the longest foreign war in U.S. history as American and Afghan forces continue to fight a growing presence of ISIS and Taliban insurgents in the region.

The family of a 19-year-old food delivery worker was not eligible for any kind of worker's compensation last month after their son was struck and killed by a dump truck.

A severe shortage of inpatient care for people with mental illness is amounting to a public health crisis, as the number of individuals struggling with a range of psychiatric problems continues to rise.

Massachusetts Gov. Charlie Baker was expected to sign legislation on Monday that would cement in state law the Obama-era mandate for free birth control regardless of changes in federal policy or future repeal of the Affordable Care Act.

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