James Chen, CMT is an expert trader, investment adviser, and global market strategist. Erika Rasure is globally-recognized as a leading consumer economics subject matter expert, researcher, and ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

The autonomic nervous system controls vital functions like breathing, digestion, and heart rate. The sympathetic part of the autonomic system is responsible for the "fight or flight" response.

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