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Science360
Food and fear: Modeling animal trade-offs shaped by landscape complexity
The Lemhi Valley is a high desert sagebrush steppe environment in eastern Idaho, along the border with Montana. It's a critical habitat and a gorgeous piece of intact sagebrush landscape, according to University of Idaho mammalian...
PBS
Pbs Learning Media: Crash Course Us History: War and Expansion
In which John Green teaches you about the Mexican-American War in the late 1840s and the expansion of the United States into the western end of North America. Famous Americans abound in this episode, including James K Polk (Young...
PBS
Pbs Learning Media: Crash Course Us History: Westward Expansion
In which John Green teaches you about the Wild, Wild, West, which as it turns out, wasn't as wild as it seemed in the movies. When we think of the western expansion of the United States in the 19th century, we're conditioned to imagine...
Khan Academy
Khan Academy: Us History: 1844 1877: Manifest Destiny: Westward Expansion
What were the causes and effects of westward expansion between 1844 and 1877? Kim discusses how economic opportunities, government support, and the idea of 'manifest destiny' brought migrants to the western United States. [8:38]