Level3 Unit1 Part1 Listening:An Unusual Day & Bus Schedule Level3 Unit1 ...
David Christian: The history of our world in 18 minutes | TED Talk Video...
Michael Murphy: Architecture that's built to heal | TED Talk Video 1: He...
Juan Enriquez: What will humans look like in 100 years| TED Talk Video 1...
Casey Gerald: The gospel of doubt | TED Talk Video 1: Gospel of Doubt Th...
Daniel Kahneman: The riddle of experience vs. memory | TED Talk Video 1:...
Ben Saunders: To the South Pole and back — the hardest 105 days of my li...
States of Matter Matter is made ofatoms andmolecules. Water, for example...
Foot Injury What's wrong? I can't walk. My left foot hurts. Is it broken...