Amb. Mark Andrew Green (ret.) became President & CEO of ONE in May 2026, bringing decades of experience in public service, diplomacy, development, and advocacy.
But titles only tell part of the story.
From teaching in a village in Kenya to serving as U.S. Ambassador to Tanzania, from helping advance landmark global health initiatives to leading some of the world's most influential development institutions, Mark's career has been shaped by a simple belief: everyone deserves the opportunity to build a better future.
We asked Mark about his journey, what brought him...
ONE
An Ebola outbreak has been confirmed in eastern Democratic Republic of Congo (DRC), with cases also reported in neighboring Uganda. The outbreak involves the Bundibugyo strain of Ebola virus disease, a rarer strain for which there is currently no approved vaccine or targeted treatment.
As health authorities work to contain the outbreak, it is also a reminder of why strong, well-funded health systems are essential to protecting communities and preventing future health emergencies. The current Ebola outbreak is also a reminder that pandemic threats remain ever-present....
Her work reflects something powerful: that enterprise and empathy are not separate forces. Together, they can create lasting change.
Here's everything you need to know about how we're celebrating Africa Day here at ONE.
When most people think of Africa, snow isn’t the first thing that comes to mind.
And yet, at the 2026 Winter Olympics, 14 African athletes will be competing across the slopes, ice, and more — representing countries from South Africa to Eritrea, Madagascar to Benin.
For a continent where snow is genuinely rare, that presence is extraordinary. And it tells a bigger story about opportunity, ambition, and how Africa shows up on the global stage.
Here are the African athletes who are representing their countries at the 2026 Winter Olympics:
South...
Vaccines are one of humanity’s greatest achievements; they save six lives every minute! Thanks to vaccines many diseases are now preventable today.
Here is a closer look.
1. Smallpox
At one point in history, smallpox was “one of the most devastating diseases to humanity.” With the first cases dating as early as 1350 BCE, the disease caused millions of deaths.
But in 1796, Edward Jenner created the smallpox vaccine — the first successful vaccine to be developed. Today, thanks to the power of...
Investments in international aid do a lot of good – from protecting people in vulnerable situations to fostering economic growth. But recent cuts to international aid, including the US pause to almost all international aid for 90 days, the UK’s recent cuts to international aid, and others, hurt millions of people globally. As is all too often the case when crisis strikes, women and girls will face the harshest consequences.
Dr. Stellah Bosire, the Executive Director and Founder of...
You’ve likely heard the phrase “foreign aid” a lot in the past few days, and for good reason. Several countries have announced cuts in their aid budgets this year.
To understand the implications of these cuts, which are part of a broader trend in cuts to development spending, it’s important to understand what foreign aid really is.
Keep reading to find out more.
What is foreign aid?
Foreign aid, international aid, ODA, or “global aid," refers to the transfer of resources and money...
In 2005, Nelson Mandela delivered a speech in the center of London and called on a new generation to be great. He had three clear demands – to make trade fair, cancel unpayable debt, and increase and improve the quality of aid. He called on all of us to act for justice. His call inspired millions of people to become active citizens, who in turn pushed their governments to deliver bold policies that have had a lasting impact for hundreds...
Africa is a continent of immense natural wealth and remarkable cultural diversity. It is also home to the world’s youngest population. Despite this extraordinary potential, Africa faces a convergence of global crises, particularly environmental ones, as illustrated by the impact of fast fashion. Yet Africa is far from being defeated by these obstacles. With its dynamic youth and abundant potential, the continent is turning challenges into opportunities, positioning itself as a key player in responsible fashion. By blending visionary...