The original version of this article, by Elisabeth Rosenthal, appeared in The New York Times.

In the tiny tortillerias of this city, people complain ceaselessly about the high price of corn. Just three years ago, one quetzal – about 15 cents – bought eight tortillas; today it buys only four. And eggs have tripled in price because chickens eat corn feed.

1.8 million food producers using improved technologies or management practices. Nearly 9 million children reached through nutrition programs. 2.4 million hectares under improved technologies or management practices. New mechanisms for donor coordination. A forward-looking agricultural research agenda. Innovative private-sector partnerships to support smallholder farmers. These are among the successes reported for the first three years of Feed the Future, the U.S. government’s new global hunger and food security initiative.

The future is urban – but is it sustainable?

For decades – centuries, really – warnings have been issued: The burgeoning human population will outgrow the planet’s capacity to sustain us. The formula seems simple. More people equals fewer resources and greater environmental damage.

As recently discussed by the National Intelligence Council, sub-Saharan Africa is home to both the most rapidly growing populations in the world and its fastest expanding cities. Save the Children’s recent report, Voices From Urban Africa: The Impact of Urban Growth on Children, explores the challenges faced by the continent’s youngest age cohort, revealing what forces are driving children and families to migrate to urban areas and the poverty many are experiencing upon getting there. In response to the report’s findings, the authors recommend training and deploying more health care workers, facilitating public-private dialogue to identify long-term water and sanitation solutions, improving access to jobs and skills training, expanding access to early childhood care, and strengthening the education system to ensure widespread attendance. Compiled from 1,050 interviews, the report is unique for its first-hand accounts of the daily lives of children, their families, and community members.

The CIA may have shut down its dedicated climate change center earlier this year, but a recently released report sponsored by the intelligence community reaffirms the deep connection between climate change and national security. New threats to U.S. national security – like increased food and water insecurity and more natural disasters requiring humanitarian assistance – have emerged as climate change creates unprecedented changes in the global environment.

Carbon offsets have fallen in and out of favor since they were established with the Kyoto Protocol in 1997. Critics say they allow wealthy organizations to placate consumers and claim their products are “green” without making any real, lasting changes. But, if the scheme works properly, some action is supposed to be taken somewhere, so what is it like at one of these credit-producing organizations?

Population growth “is highly concentrated in what are today the poorest and least well-governed areas of the world,” said George Mason University professor Jack Goldstone at the Wilson Center on December 5.

Goldstone was joined by Suzanne Ehlers, president and CEO of Population Action International (PAI), and Matthew Erdman, population-health-environment technical advisor at USAID, to discuss the implications of seven billion people and counting for the environment as part of the joint Wilson Center-George Mason University Managing the Planet series. [Video Below]

The original version of this article, by Autumn Spanne, appeared on The Daily Climate.

Five hours by truck and mule from the nearest town, a rumbling generator cuts through the silent night to power large spotlights as botanists crouch and kneel on large blue tarps spread across a cow pasture. It’s nearly midnight, and the team works urgently to describe every detail of the dozens of colorful orchids, ferns, and other exotic plants they have collected that day in Las Orquídeas National Park, one of the single most biologically diverse places on the planet.