Plants: Roots and Stems (3:31); Plants: Leaves and Photosynthesis (1:33); Plants: Reproduction (3:36); Seeds (2:07);

Nervous System (4:19); Divisions of the Nervous System (4:37); Senses (5:25); Credits: Brain and Nervous System: Real World Science (0:30); Brain and Nervous System (0:30);

The Respiratory System (3:42); The Circulatory System: Blood (5:13); The Circulatory System: Heart and Blood Vessels (2:34); The Respiratory and Circulatory Systems Together (3:51); Heart and blood (1:09);

Intro to weather (5:35); Chaos of War (5:07); Footage from "Platoon" (1:51); Financing Wartime Empire (3:57); Inherited Wartime Options (3:03); Unintended Consequences of War (2:41); Fiction to Digest Reality (3:32); Weather (2:24); Weather (2:24); Components of Weather (2:59); Water Cycle (2:03); Clouds (1:54); Violent Storms (2:24); Climate (2:39); Credits: Weather and Climate: Real World Science (0:11);

How do We Know so Much About Dinosaurs? (1:59); How do You Find Fossils? (1:04); What Can We Learn from Fossils? (2:45); Dinosaurs in the Mesozoic Era (2:08); Saurischia and Ornithischia (2:27); Missing Fossil Information (1:48); Credits: Fossils and Dinosaurs: Real World Science (-9:0-48);

What is Matter? (4:35); Properties of Matter (3:47); State Changes (4:28);

What Are Rocks and Minerals? (2:59); The Structure of the Earth (1:28); Types of Rocks and How They Are Formed (7:50); The Rock Cycle (2:32);

What Simple Machines Do (1:53); Types of Simple Machines (1:57); Simple Machines: Wedge (1:43); Simple Machines: Screw (1:53); Simple Machines: Lever (2:45); Simple Machines: Wheel and Axle (1:59); Simple Machines: Pulley (1:35); Force (2:00); simple machines (1:09);

The Basics of Sound (4:00); Properties of Sound Waves (2:30); Animals and Sound (2:31); Sound Travels (3:17);

Waste and Decomposition (2:33); The Need to Recycle (1:28); How Waste is Treated (3:25); How to Reduce Your Impact (3:43);

The Solar System (4:39); The Inner Planets (7:21); The Asteroid Belt (1:52); The Gas Giants (4:24); Astronomy and Astronomers (0:00); stars (0:00); Astronomy and Astronomers (1:09);

The Parts of the Scientific Method (3:51); Using the Scientific Method to Solve a Problem (3:00); Who Uses The Scientific Method? (4:40); One More Scientific Experiment (5:42);