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Today's featured list: Timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions. Though its roots can be traced back to the earliest recorded history, the history of chemistry in its modern form arguably began with the English scientist Robert Boyle.
Today's featured topic: The BBC Sports Personality of the Year is an awards ceremony that takes place annually in December. Devised by Paul Fox in 1954, it originally consisted of one titular award. Several new awards have been introduced, and as of 2008[update], eight awards are presented, including the Team of the Year,Overseas Personality, Lifetime Achievement Award, Helen Rollason Award, the Coach Award, and the Newcomer Award.
| Listen to Spring, from The Four Seasons
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Today's featured sound: The Four Seasons, a set of four violin concertos by Antonio Vivaldi. Composed in 1723,The Four Seasons is Vivaldi's best-known work, and is among the most popular pieces of Baroque music. The texture of each concerto is varied, each resembling its respective season. Performed by John Harrison and the Wichita State University Chamber Players.