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Photo: Zhang Peng/LightRocket via Getty Images

Approximately 93% of the world’s children under the age of 15 — about 1.8 billion children — are breathing air that threatens their health and development, according to a new report released by the World Health Organization.

Between the lines: Children are more vulnerable to air pollution because they are still developing, but they also breathe more rapidly than adults and are therefore exposed to more pollutants, the authors write. Children are also physically closer to the ground, and therefore often take in pollutants at higher concentrations.

The big picture: Air pollution is responsible for almost 1 in 10 deaths in children under 5, making it a leading threat to child health.

Why it matters:

  • Children exposed to air pollution can be at greater risk of cardiovascular disease and other chronic conditions later in life.
  • Toxic air exposure can affect neurological development and cognitive ability. It can also trigger childhood cancer and asthma.
  • Women who are pregnant and exposed to polluted air are more likely to give birth prematurely and have children at low birth weights.

Go deeper

5 mins ago - Health

Boris Johnson announces month-long COVID-19 lockdown in U.K.

Prime Minsiter Boris Johnson. Photo: NurPhoto / Getty Images

U.K. Prime Minister Boris Johnson on Saturday outlined his plan for the country's second coronavirus lockdown as the nation topped the 1 million case mark, per Johns Hopkins University data.

Details: Starting Thursday, people in England must stay at home, and bars and restaurants will close except for takeout. All non-essential retail will also be shuttered. Inter-mingling between households and outbound international travel or out-of-home boarding will be prohibited. The new measures will last through at least December 2.

Updated 57 mins ago - Politics & Policy

The massive early vote

Illustration: Sarah Grillo/Axios

Early voting in the 2020 election across the U.S. on Saturday had already reached 65.5% of 2016's total turnout, according to state data compiled by the U.S. Elections Project.

Why it matters: The coronavirus pandemic and its resultant social-distancing measures prompted a massive uptick in both mail-in ballots and early voting nationwide, setting up an unprecedented and potentially tumultuous count in the hours and days after the polls close on Nov. 3.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Ipsos poll: COVID trick-or-treat.
  2. World: Greece tightens coronavirus restrictions as Europe cases spike — Austria reimposes coronavirus lockdowns amid surge of infections
  3. Economy: Conference Board predicts economy won’t fully recover until late 2021.
  4. Technology: Fully at-home rapid COVID test to move forward.
  5. States: New York rolls out new testing requirements for visitors.