This document summarizes a presentation about open knowledge and Wikipedia. It discusses how open science and open knowledge can help bridge the gap between researchers and citizens by making scientific research and data accessible to all. It provides examples of how scientists can engage in open knowledge practices like publishing open access research, blogging, and editing Wikipedia to help communicate scientific knowledge to a broader audience. The presentation argues that open knowledge tools can help empower underprivileged parts of society and reduce the digital divide by providing more equitable access to information.