Share: Title:Big Idea 9: Humans Change Earth Duration: 4:58 Plays: 39K views Published: 12 years ago Download MP3 Download MP4 Simillar Videos ▶️ 6:37 Why Earth Science? 39K views • 12 years ago ▶️ 4:57 Big Idea 2: Earth Is 4.6 Billion Years Old 39K views • 12 years ago ▶️ 4:11 Big Idea 6: Life Evolves On Earth 39K views • 13 years ago ▶️ 5:50 Big Idea 3: Earth's Systems Interact 39K views • 13 years ago ▶️ 4:27 Big Idea 8: Natural Hazards Affect Humans 39K views • 13 years ago