Women are often a minority in science, but they are working to change that. Women all over the world are playing integral roles in the fight against warming temperatures.
For Earth Day 2021, ABC News is highlight three scientists and one activist who are leading the charge against climate change.

Here are their stories:
The young activist...Kehkashan Basu has done more for the climate fight in her short life than many who are twice or three times her age.
The 20-year-old from Dubai is a United Nations Human Rights champion, has been featured in the Forbes' "30 Under 30" list and founded the Green Hope Foundation, a global social innovation youth enterprise that works with those who are in vulnerable and marginalized communities, in 2012 when she was just 12 years old.
The organization has a specific focus on women and children, groups that are often affected most by the pressing challenges of the world, which includes climate change, Basu told ABC News.
Basu was 7 years old when she saw an image of a bird that had died with a belly full of plastic. On her eighth birthday, which is also World Environment Day, she planted her first tree, and four years later she started her foundation to provide children and young people with a platform to learn about the challenges in sustainability and how to take actions to mitigate those problems in their own communities, she said.
Basu said the empathy that has run rampant in her household inspired her to provide knowledge to the less fortunate.
"I used to see my parents go out every weekend to distribute food and clothes to those in need," she said. "So I grew up with the notion that giving back to the society and our community and environment was something that was just normal and something everyone had the responsibility to do."es store carbon.

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The Arctic explorer ...Allison Fong, 39, is a trained biological oceanographer and sea ice ecologist for the Alfred Wegener Institute Helmholtz Center for Polar and Marine Research in Bremerhaven, Germany, has spent more than 300 days in the Arctic since 2015.
Fong studies the bacteria small phytoplankton that are important for controlling carbon and the cycle of exchange of carbon between the ocean, ice and the atmosphere, she told ABC News.
For the past few years, Fong has taken part in an expedition called Mosaic, in which researchers took the German icebreaker RV Polarstern and froze it into the Arctic sea ice. The scientists then let it drift across the central Arctic Ocean for one year in an effort to understand how the climate in the Arctic is changing.

"It's changing faster than any other place on Earth," Fong said. "We're losing sea ice at an exponential rate compared to years before, and that has an impact -- not just on what's happening in polar regions...
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The NASA program director..Catherine Lilian Nakalembe, Ph.D., 37, studies the world's food supply as director of NASA's Harvest Africa Program and is already seeing the effects of climate change on communities in Africa, she told ABC News.
Nakalembe uses satellite imagery to monitor agriculture and gather data to advance methods and influence policy decisions. But her work goes beyond studying images from afar.
Through her work in the field, Nakalembe has seen how climate change has affected people. She would participate in mapping the land to collect ground data for satellite archiving systems and see villages with fields that should be thriving mid-season be washed away by a flood.
She would see families affected by a dry season collect large rocks to sell for a small amount of money to be able to buy a meal for the next day. She would see women, including pregnant women, walking farther and farther with arms full of firewood and large canisters for water balancing on their heads. The drier it gets, the further the women have to walk, Nakalembe said.
Witnessing the devastation first-hand made Nakalembe appreciate the meaning behind her research, transforming the raw data into something visible and tangible.
"It gives meaning behind the things that you're looking into," she said...
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