Large scale wildfires have increasingly made headlines in recent years. Fires have devastated areas of California, Australia, Siberia and the Pantanal that used to be relatively unaffected. We speak to two women helping stop the spread of wildland fires, protecting precious ecosystems, national parks and people's homes.

Being a professional fire fighter is out of the question for Olga Serova who lives in Russia, where women are not allowed to join the profession. However, Olga volunteers with teams that battle wildfires in the national parks outside Moscow and St Petersburg. She tells us why she does it and how people react.

Justine Gude is a Texas Canyon Hotshot in the Los Angeles National Forest. She's one of a team of elite small crews of wildfire fighters – there are about 100 crews in America – who have been trained to deal with fires in remote regions where little logistical support is available. She was one of a team of volunteer experts who flew to Australia to help out firefighting efforts in Melbourne in 2020.

Produced by Jane Thurlow