lamont.columbia.edu2 days agoGiant Canyon on Mars Is Still Tectonically Active TodayArticle URL: https://lamont.columbia.edu/news/giant-canyon-mars-still-tectonically-active-today Comments URL: https://news.ycombinator.com/item?id=50360573 Points: 5 # Comments: 0Visit lamont.columbia.eduBookmarkAdd to collection