WASHINGTON -- NASA is inviting the public to vote online for the most important contribution the space agency has made to exploring Earth and improving the way we live on our home planet. NASA is conducting the survey as part of its celebration of Earth Day, April 22. Voting begins today, and closes on April 21. Poll results will be announced on NASA's Web site on Earth Day.
For more information and o cast your votes, visit:
For more information about Earth Day and NASA, visit: