Crash Course
Humans and Energy: Crash Course World History 207
In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost all of the energy that humans use has been...
Weatherthings
Weather Things: Tornado Formation
Over a thousand tornadoes happen every year in the United States but only few dozen take lives. Most tornadoes are brief and weak but the tornadoes that are large and powerful can wipe homes off their foundations. Tornadoes only come...
Weatherthings
Weather Things: Tornado Statistics
Over a thousand tornadoes happen every year in the United States but only few dozen take lives. Most tornadoes are brief and weak but the tornadoes that are large and powerful can wipe homes off their foundations. Tornadoes only come...
Weatherthings
Water Smart: Water in the Air - Rain
Water in the Air reveals the varied phases of water that surround us, fall on us, travel in air, and serve as a crucial component of the water cycle. Emphasis is on the fact that water in air can be vapor or solid, visible or invisible,...
Weatherthings
Severe Weather Safety: Watch for the Warning
All thunderstorms create hazards of lightning. Some thunderstorms result in flash flooding, large hail, damaging wind or a tornado. See how to prepare for these threats at school, at home, or outside. Understand the difference between a...
Weatherthings
Weather Things: Storms
The atmosphere is dynamic and forever changing to maintain balance. The ingredients of air, sunlight and water allow life to exist on Earth, but they also generate calm scenes like rainbows, as a tornado ends. All storms move moisture,...
Weatherthings
Weather Things: Hurricane Forecasting
For their size and impact, hurricanes are often called the greatest storms on Earth. They expend a tremendous amount of energy through the water cycle, and through wind, to maintain the balance of the atmosphere. Known by different names...