Here are 10 celebrities who made a positive impact on the world in the past year. Meghan Markle, who joined Britain's royal family in May, has been focusing on women's rights and collaborated with survivors of London's Grenfell Tower fire to create a community cookbook. Emma Watson, famous for her role as Hermione in the Harry Potter movies, 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 calling for an end to restrictive abortion laws spanning from India to Ireland. At the same time, she was photographed wearing earrings made from shrapnel and undetonated bombs from Laos. David Attenborough, the elderly nature documentary broadcaster, used 2018 and the annual United Nations' climate talks in Poland to support young people and emphasize the urgent need for progress on climate action. Bollywood legend Amitabh Bachchan solidified his popularity in India by paying off the loans of farmers with over 40 million rupees ($560,000) after an agricultural crisis left many in severe poverty. Elton John, a British singer-songwriter known for his advocacy for LGBT+ rights, emphasized the need for greater support for individuals living in poverty to improve their access to HIV/AIDS medical treatment, labeling the current lack of access as "disgraceful." Millie Bobby Brown, the teenage 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 related to children's rights, education, poverty, and bullying, stating that being chosen for this role was a dream come true for her. Michelle Obama, the ex-first lady of the United States, has been traveling worldwide to promote her memoir and advocate for women's rights and girls' education. Raised in a working class family in Chicago, Obama aims to inspire women to find hope in challenging political and social environments. David Beckham, the former captain of the English soccer team, has recently joined a campaign led by charity Malaria No More UK to revitalize the global effort against malaria. The former athlete appeared in a short film where he was surrounded by mosquitoes to bring attention to the ongoing issue of malaria, which still claims the lives of approximately 445,000 people each year according to the World Health Organization (WHO). Australian actress Cate Blanchett, who is also a goodwill ambassador for the United Nations, spoke out about the Rohingya crisis, calling on nations to increase their support for refugees escaping Myanmar and seeking safety in Bangladesh. Blanchett, a two-time Oscar winner, emphasized the urgency of the situation, describing it as a "race against time" to ensure the protection of Rohingya refugees. Princess Beatrice, the eighth in line to the British throne, has been actively involved in advocating against online abuse and cyber-bullying, particularly targeting young women and girls. She is a member of a larger anti-bullying initiative supported by celebrities like Kendall Jenner and Cara Delevingne, known as "Be Cool Be Nice."