National Geographic announced today that James Cameron, Jane Goodall, and Robert Ballard will participate in a Google+ Hangout on Sunday to answer questions from people around the world abou their studies and endeavors.

While many know Cameron for his classic films, he also set a record with a 35,756-foot solo dive to the ocean’s deepest point in the South Pacific’s Mariana Trench last year.

Goodall, as you may know, led a 50-year field study of wild chimpanzees, and Ballard discovered the RMS Titanic in 1985, and has pioneered the use of robotics in underwater exploration.

Additional scientists and explorers Kyler Abernathy, Kenny Broad, Albert Lin, Krithi Karanth, Paula Kahumbu, Sebastian Cruz, and Boyd Matson will also participate in the hangout.

The hangout will take place on Sunday, January 13 from 1PM to 2PM Eastern. You can upload video questions to YouTube with #NatGeo125, post a question on Google+ or Twitter with the same hashtag, comment on the National Geographic New Watch blog, or leave a comment on this Facebook post.

The hangout itself can be viewed on the National Geographic Google+ Page, as well as on the NatGeo YouTube channel.