Scientists prioritize certain objectives and goals over others when engaging in public communication. The top priorities include informing and educating the public about scientific issues, generating interest and excitement about science, and defending science against falsehoods. However, simply increasing science literacy and knowledge may have limited impact, and scientists are often seen as competent but cold. More emphasis could be placed on objectives like showing the public that scientists care about society and are open and transparent. The effectiveness of different engagement tactics also requires further research.