Joseph Lowery, a former "dear friend" of Martin Luther King Jr, was a champion for civil rights.Read more
8-year-old Licypriya Kangujam from India is campaigning to make climate change lessons mandatory in schools. She says that the Indian state of Gujarat will now be the second state in India to include climate change as a compulsory subject in the school education. At only 8 years old, she's met Greta Thunberg and been to the United Nations climate change conference in Madrid. (Photo: 8-year-old climate activist Licypriya Kangujam. Credit: Licypriya Kangujam)
Do today's school strikers think protests lead to change and what can they learn from the past?
Brazilian environmental activist Chico Mendes was shot dead by cattle farmers angered by his efforts to save the rainforest.
These three teenagers are passionate about issues they see around them, and are training to be activists at The Advocacy Academy in London.
Speaking at the Obama Foundation summit in Chicago, he said "people who do good stuff have flaws".
In an emotional interview, Raja Meziane recounts how exile from Algeria led to unexpected success.
Rok Rozman competed at the 2008 Summer Olympics. Now he has kayaked across six countries to help defend rivers against dams.