These databases cover many of today's hot topics. They provide unbiased information as well as present others' opinions. They can be great sources for both your informative and persuasive speeches.
Sometimes nothing backs up your points like a hard number or statistic. Below are some credible websites to find polling information and statistics.
Newspapers can be a good way to find information on a local topic. Be careful, however! Newspapers are NOT considered scholarly sources, so make sure you are allowed to use newspaper articles in your speech before you do so.