Hard Numbers: 2021 in review

9 billion: More than 9 billion COVID vaccine doses have been administered in 184 countries since the shot was first rolled out just under a year ago. Of those, roughly 2.8 billion have been administered in mainland China.

168 million: Roughly 168 million school-aged kids worldwide have missed out on classes for around a year during the pandemic, and one in three of those were unable to access remote classes. The toll of the pandemic on children's development and wellbeing will become more evident in the months and years ahead.

247,000: Net international migration added 247,000 people to the US population in 2020-2021, the smallest increase in decades. (It reached a high of 1,049,000 in 2015-2016.) US land borders with Canada and Mexico, the main getaway for migrants, remained closed for much of that period because of the pandemic.

100 billion: Insurance claims from extreme weather events linked to climate change topped $100 billion in 2021, according to a new British report. The most expensive single event was Hurricane Ida, which hit the US’ Northeast this fall, causing $65 billion in damages.

More from GZERO Media

- YouTube

Artificial intelligence is transforming the global workforce, but its impact looks different across economies. Christine Qiang, Global Director in the World Bank’s Digital Vice Presidency, tells GZERO Media’s Tony Maciulis that while “every single job will be reshaped,” developing countries are seeing faster growth in demand for AI skills than high-income nations.

Hamas militant stands guard, as heavy machinery operates at the site where searches are underway for the bodies of hostages killed after being seized by Hamas during the October 7, 2023 attack, amid a ceasefire between Israel and Hamas, in Khan Younis, southern Gaza Strip, October 17, 2025.
REUTERS/Stringer

On Monday, Hamas freed the remaining 20 living hostages, while Israel released nearly 2,000 Palestinian prisoners — the first step in the ceasefire deal the two sides struck last week.

- YouTube

As the US economy continues to defy expectations, Eurasia Group Managing Director of Global Macro Robert Kahn says the key question is whether a slowdown has been avoided or merely delayed. “The headline here is the impressive resilience of the US, maybe also the global economy over the last six months,” Kahn tells GZERO Media’s Tony Maciulis on the sidelines of the 2025 World Bank–IMF Annual Meetings.

Former UK prime minister Tony Blair and Egyptian President Abdel Fattah el-Sisi attend the world leaders' summit on ending the Gaza war, in Sharm el-Sheikh, Egypt, on October 13, 2025.

Egyptian Presidency/Handout via REUTERS

At first glance, it might seem odd that Tony Blair is leading the Western proposal for the future of Gaza.