As summarized on their website, "Zooniverse is the world's largest and most popular platform for people-powered research. This research is made possible by volunteers - hundreds of thousands of people around the world who come together to assist professional researchers." I learned about them yesterday when I volunteered to count penguins with some coworkers.
Scientific data collection can be too much of a good thing. "With the help of Zooniverse volunteers, researchers can analyze their information more quickly and accurately than would otherwise be possible, saving time and resources, advancing the ability of computers to do the same tasks, and leading to faster progress and understanding of the world, getting to exciting results more quickly." That's right, you're advancing scientific discovery and artificial intelligence, all while clicking on adorable pictures of penguins. The results can be found in the many Zooniverse publications.
Zooniverse is a partnership between organizations in the UK, such as the University of Oxford and organizations in the US, including the Adler Planetarium in Chicago and the University of Minnesota. For the educators among you, visit ZooTeach, a website where teachers share lesson plans and resources that compliment Zooniverse's projects.
If you'd like to get more involved you can read about all the projects here, pick your favorites and then volunteer from the comfort of home or your neighborhood cafe. To stay in the loop with new projects as they are added to the mix, like the Zooniverse Facebook page and follow them on Twitter @the_zooniverse