WASHINGTON—Saying there's no way around it at this point, a coalition of scientists announced Thursday that one-third of the world population must die to prevent wide-scale depletion of the planet's resources—and that humankind needs to figure out immediately how it wants to go about killing off more than 2 billion members of its species.

Representing multiple fields of study, including ecology, agriculture, biology, and economics, the researchers told reporters that facts are facts: Humanity has far exceeded its sustainable population size, so either one in three humans can choose how they want to die themselves, or there can be some sort of government-mandated liquidation program—but either way, people have to start dying.

And soon, the scientists confirmed.

"I'm just going to level with you—the earth's carrying capacity will no longer be able to keep up with population growth, and civilization will end unless large swaths of human beings are killed, so the question is: How do we want to do this?" Cambridge University ecologist Dr. Edwin Peters said. "Do we want to give everyone a number and implement a death lottery system? Incinerate the nation's children? Kill off an entire race of people? Give everyone a shotgun and let them sort it out themselves?"

"Completely up to you," he added, explaining he and his colleagues were "open to whatever." "Unfortunately, we are well past the point of controlling overpopulation through education, birth control, and the empowerment of women. In fact, we should probably kill 300 million women right off the bat."

Because the world's population may double by the end of the century, an outcome that would lead to a considerable decrease in the availability of food, land, and water, researchers said that, bottom line, it would be helpful if a lot of people chose to die willingly, the advantage being that these volunteers could decide for themselves whether they wished to die slowly, quickly, painfully, or peacefully.

Additionally, the scientists noted that in order to stop the destruction of global environmental systems in heavily populated regions, there's no avoiding the reality that half the world's progeny will have to be sterilized.

"The longer we wait, the higher the number of people who will have to die, so we might as well just get it over with," said Dr. Chelsea Klepper, head of agricultural studies at Purdue Univer­sity, and the leading proponent of a worldwide death day in which 2.3 billion people would kill themselves en masse at the exact same time. "At this point, it's merely a question of coordination. If we can get the populations of New York City, Los Angeles, Beijing, India, Europe, and Latin America to voluntarily off themselves at 6 p.m. EST on June 1, we can kill the people that need to be killed and the planet can finally start renewing its resources."

Thus far, humanity has been presented with a great variety of death options, among them, poisoning the world's water supply with cadmium, picking one person per household to be killed in the privacy of his or her home, mass beheadings, and gathering 2.3 billion people all in one place and obliterating them with a single hydrogen bomb.

Sources confirmed that if a death solution is not in place by Mar. 31, the U.N., in the interest of preserving the human race, will mobilize its peacekeeping forces and gun down as many people as necessary.

"I don't care how it happens, but a ton of Africans have to go, because by 2025, there's no way that continent will be able to feed itself," said Dr. Henry Craig of the Population Research Institute. "And by my estimation, three babies have to die for every septuagenarian, because their longer life expectancy means babies have the potential to release far more greenhouse gases going forward."

While the majority of the world's populace reportedly understands this is the only option left to save civilization, not all members of the human race are eager to die.

"I personally would rather live, but taking the long view, I can see how ensuring the survival of humanity is best," said Norwich, CT resident and father of three Jason Atkins. "I guess if we were to do it over again, it would make sense to do a better job conserving the earth's finite resources."

"Hopefully, the people who remain on the planet will use the mass slaughter of their friends and loved ones as an incentive to be more responsible going forward," he added.