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Brette Warshaw

What’s the Difference Between Soil and Dirt?

For today’s answer, we’re turning to Patrick Megonigal, an ecosystem ecologist at the Smithsonian Environmental Research Center. According to Megonigal, as told to Science News, soil is: the compilation of minerals, air, water, animals and other living matter (and their wastes or decaying bodies) that accumulate in layers and become compacted over time. These layers—or “horizons”—are defined as the topsoil, subsoil, and parent soil. And dirt? Megonigal defines dirt as “displ read more

For today’s answer, we’re turning to Patrick Megonigal, an ecosystem ecologist at the Smithsonian Environm read more

What’s the Difference Between a Sweet Potato and a Yam?

For today’s answer, we’re turning to Harold McGee’s On Food and Cooking. According to McGee: The sweet potato is the true storage root of Ipomoea batatas, a member of the morning glory family. It is native to northern South America, and may have reached Polynesia in prehistoric times. Columbus brought the sweet potato to Europe, and by the end of the 15th century it was established in China and the Philippines. China now produces and consumes far more sweet potatoes than the Americas, en read more

For today’s answer, we’re turning to Harold McGee’s On Food and Cooking. According to McGee: The sweet read more

What’s the Difference Between a Sociopath and a Psychopath?

To answer today's question, we’re turning to the Diagnostic and Statistical Manual of Mental Disorders (DSM) and Encyclopedia Britannica. Sociopathy and psychopathy are both defined in the DSM as types of anti-social personality disorders, which are characterized by a “pervasive pattern of disregard for and violation of the rights of others.” When it comes to the differences between the two conditions, Encyclopedia Britannica writes: Among persons who display APD, those called ps read more

To answer today's question, we’re turning to the Diagnostic and Statistical Manual of Mental Disorders (DSM read more