There might be plenty of fish in the sea, but soon there will be even more plastic. The World Economic Forum revealed Tuesday that if plastic consumption and production continues at current rates, the world's oceans will contain more plastic than fish in terms of weight by 2050.

The World Economic Forum predicts plastic production will increase threefold to 1,124 million tons over the next 34 years. Plastic's use, which has grown 20-fold in the last 50 years, is expected to double yet again in the next 20 years.

The big problem with this boom, the World Economic Forum says, is the shockingly low percentage of plastic that gets recycled. Plastic packaging gets recycled only 14 percent of the time, translating to annual economic losses from tossed plastic packaging between $80 billion to $120 billion.

The economy isn't all that's suffering, either: Almost a third of plastic that goes unrecycled ultimately escapes landfills. Becca Stanek

Leaving or attempting to change the nuclear deal will undermine U.S. diplomacy, Iran's foreign minister, Mohammad Javad Zarif, warned in a press conference in New York Saturday.

"That's a very dangerous message to send to people of Iran but also to the people of the world," he said, "that you should never come to an agreement with the United States, because at the end of the day the operating principle of the United States is, 'What's mine is mine; what's yours is negotiable.'"

Zarif made similar comments in a CBS interview Sunday, arguing that exiting the deal "will lead to U.S. isolation in the international community" because it will show "the United States is not a reliable partner," and that "the length or the duration of any agreement would depend on the duration of the presidency."

President Trump faces a May 12 deadline to decide whether to maintain the agreement. Watch the full CBS interview below. Bonnie Kristian

Four people were killed and four others injured when a gunman dressed only in a coat opened fire around 3:30 a.m. local time at a Waffle House near Nashville. The shooting suspect has been identified as Travis Reinking, 29, of Illinois. A Waffle House patron, James Shaw Jr., wrestled the gun away from the attacker, who left his coat and fled the crime scene nude.

"If you see a nude guy walking around, call the police immediately," said Metropolitan Nashville Police Department representative Don Aaron. "We believe he may be the suspect in this." A man dressed only in pants and fitting Reinking's description was seen later Sunday morning in a wooded area within a mile of the Waffle House but was not apprehended at that time. A manhunt is ongoing as of midday Sunday.

This is a breaking news story that will be updated as more details become available. Bonnie Kristian

The oldest person in the world, a Japanese woman named Nabi Tajima, died Saturday at the age of 117.

Tajima had been the world's oldest person since September, and she was hospitalized beginning in January. Born on August 4, 1900, Tajima had nine children and about 160 descendants over the course of her life. She was the last person verified to have lived in the 19th century.

The oldest person in the world now is another Japanese woman, one Chiyo Miyako. She will turn 117 next month. Bonnie Kristian

President Trump made a pair of posts on U.S.-North Korea nuclear negotiations on Twitter Sunday, apparently in response to his morning's viewing of cable news:

While North Korean leader Kim Jong Un did announce Saturday he would cease nuclear and missile testing and shutter a testing site, he has not agreed to denuclearize as Trump claimed.

Many experts consider denuclearization an unrealistic aim, as Pyongyang considers a nuclear arsenal its best insurance against forcible regime change. North Korean state media reports have pointed to the U.S.-orchestrated ousters of Iraq's Saddam Hussein and Libya's Moammar Gadhafi as evidence that "powerful nuclear deterrence serves as the strongest treasure sword for frustrating outsider's aggression." Bonnie Kristian

While President Trump has in public enthusiastically praised North Korean leader Kim Jong Un's Saturday announcement that he would cease nuclear and missile testing and shutter a testing site, behind closed doors, the Trump administration is reportedly unsure of how to interpret Kim's offer.

White House aides are skeptical of the freeze proposal, The Washington Post and The New York Times both reported Saturday evening. They worry Kim's concession will create an "illusion" of cooperation without making all the changes — including total denuclearization, which many experts consider to be an unrealistic aim — the administration hopes to secure in upcoming Trump-Kim talks.

"The reality is that North Korea has nuclear weapons, and we have to deal with that reality," Toby Dalton, co-director of nuclear policy at the Carnegie Endowment for International Peace, told the Post. "The gap between reality and what we're planning for is problematic," he argues, "as it creates expectations that can't be met in the summit process, and we're back to where we were." Bonnie Kristian

At least 31 people were killed and more than 50 wounded by a suicide bombing at a voter registration center in Kabul, Afghanistan, on Sunday. The Islamic State claimed responsibility for the attack, which targeted would-be voters lining up to receive ID cards for a parliamentary election scheduled for October.

"There were women, children," said Bashir Ahmad, who was nearby when the bomb exploded. "Everyone had come to get their identity cards." This is the deadliest attack Afghanistan has suffered since January.

Afghanistan's chief executive, Abdullah Abdullah, condemned the incident on Twitter. "I stand with those affected by this coward attack," he wrote. "Our resolve for fair and transparent election will continue and terrorists won't win against the will of the Afghan people." Bonnie Kristian

A neo-Nazi march is scheduled for Saturday in the small Georgia city of Newnan, about 40 miles southwest of Atlanta. Anti-fascist counter-protesters are expected as well, and a local church will hold an interfaith service to promote "peace and unity" during the rally.

To prepare for the event, local shopkeepers have removed anything that could be moved or thrown in public spaces, and many will not open for business to decrease opportunities for conflict. Many Newnan residents went shopping the night before to help make up the missing revenue.

And a community nonprofit invited children to make chalk drawings in the local park to undermine the neo-Nazis' message: "It will be hard for the hate group to take serious video footage when a rainbow-colored unicorn is in the shot." Bonnie Kristian