Change.org is an online platform that allows individuals to create and sign petitions on various social issues. Users can advocate for causes they care about, ranging from environmental protection to human rights, by gathering support from others. The platform aims to empower people to make their voices heard and influence decision-makers. Petitions on Change.org can reach a wide audience, often leading to significant changes in policies or practices. The site provides tools for users to share their petitions through social media and email, helping to mobilize support and raise awareness about important issues.