With over 60,000 participants from 5 continents, we are happy - and sad - to say that the Mastodon Matrix Project has been discontinued. We were wildly successful in meeting our goals for introducing the public to how we know what we know about past life and climates, and the help to researchers was invaluable. We thank SciStarter.com hugely... Mastodon Volumes of Thanks to SciStarter and All the Participants!