What Are Stem Cells?
Biology / Human Biology
When an egg is fertilized by a sperm cell, it quickly becomes a single cell from which all cells of the body-to-be will be created. This 'mother of all cells' is what biologists call a totipotent stem continue reading this fact
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The Red-Cockaded Woodpecker
Biology / Animals
In the mid-l800s, naturalist John Audubon reported that the red-cockaded woodpecker was found abundantly in the pine forests of the southeastern United States. Historically, this woodpecker's range ex continue reading this fact
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New Ideas About An Old Puzzle
Biology / Human Mind
There's a familiar way of talking about language as a 'tool,' but of course that's just a metaphor. Literal tools made of rock can last for millennia as evidence of the skills of early humans. Not so continue reading this fact
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