Here are 10 celebrities who have taken a stand in the past year to make a positive impact on the world. Meghan Markle, who joined Britain's royal family in May, has focused on women's rights. She wore "slave-free" jeans from Outland Denim in Australia, sparking a rush to buy them, and worked with survivors of London's Grenfell Tower fire on a community-led cookbook. Emma Watson, best known for her role as Hermione in the Harry Potter films, supported the #MeToo movement in 2018 by donating one million pounds to a fund that helps charities combat sexual abuse. In October, Watson penned a public letter advocating for the end of restrictive abortion laws across countries ranging from India to Ireland. Around the same time, she was also photographed wearing earrings made from shrapnel and undetonated bombs from Laos. David Attenborough, the elderly nature documentary broadcaster, used the platform of the 2018 United Nations' climate talks in Poland to align himself with young activists and emphasize the urgency of taking action on climate change. Bollywood icon Amitabh Bachchan solidified his popularity in India by generously paying off the debts of farmers who were struggling due to an agricultural crisis, spending over 40 million rupees ($560,000) in the process. 5. Elton John, a renowned British singer-songwriter and advocate for LGBT+ rights, urged for greater support to be provided to individuals living in poverty in order to improve their access to HIV/AIDS medical treatment, condemning the lack of access as a "disgrace." 6. Millie Bobby Brown, the young star of the popular Netflix series "Stranger Things," was appointed as the youngest goodwill ambassador for the United Nations children's agency UNICEF this year. She pledged to address issues concerning children's rights, education, poverty, and to combat bullying. Brown expressed her excitement, calling the opportunity a "dream come true." Michelle Obama, the ex-first lady of the US, has been advocating for women's rights and girls' education while promoting her memoir internationally. Obama, who was raised in a working-class family in Chicago, aims to empower women to find hope in challenging political and social circumstances. David Beckham, the former captain of the English soccer team, has partnered with the charity Malaria No More UK to support a campaign to revitalize the global effort against malaria. The former athlete appeared in a short film where he was surrounded by mosquitoes to draw attention to the fact that malaria still claims the lives of approximately 445,000 individuals each year, as reported by the World Health Organisation (WHO). Cate Blanchett, an Australian actress and United Nations' refugee goodwill ambassador, voiced her concerns about the Rohingya crisis, calling on nations to increase their support for refugees escaping Myanmar and seeking refuge in Bangladesh. Despite being a two-time Oscar winner, Blanchett emphasized the urgent need to act swiftly to protect Rohingya refugees. Princess Beatrice, the eighth in line to the British throne, has been actively working to address the issue of online abuse and cyber-bullying, particularly targeting young women and girls. She is involved in a larger anti-bullying campaign supported by celebrities like Kendall Jenner and Cara Delevingne, known as "Be Cool Be Nice."