By the Numbers: Greta Thunberg

April 2021

by Karina Hamalainen

Today, Greta Thunberg is one of the best-known climate activists in the world. But it all started small: In the summer of 2018, she began holding a one-person climate protest. With her parents’ permission, 15-year-old Greta would skip school every Friday and sit outside the Swedish parliament building with a sign that read “School Strike for Climate.” Since then, students around the world inspired by Greta have held their own strikes for climate justice. Now 18, Greta continues to fight climate change by speaking out.

Read on to learn more about Greta and her climate activism. Then plug in the numbers to solve the equation below and reveal a final fact.

16

Evgenia Arbugaeva for TIME

Age Greta was when she was named Time Person of the Year in 2019, becoming the youngest Person of the Year and the first born in the 21st century

20

Jonathan Nackstrand/AFP via Getty Images

Days her initial strike outside the Swedish parliament lasted

1.5

Sarah Silbiger/Getty Images

Maximum temperature increase, in degrees Celsius, allowable in order to slow down climate change, according to scientists.

3,500

Johannes Eisele/AFP via Getty Images

Distance, in nautical miles, Greta sailed across the Atlantic Ocean to attend the 2019 U.N. Climate Action Summit in New York City. After 10 weeks touring the U.S., she took a different boat home!

Algebra

Order of Operations

Holli/Shutterstock.com (Protest)

Text-to-Speech