useless trivia: What Word Means: A Waxy Substance Found On Plants?

Questions

22nd Space Shuttle Mission, Challenger 9, is launched carrying eight crewmen (2 Germans, 1 Dutch).?

Martin Luther posts his 95 Theses, begins Protestant Reformation.?

Jan Vermeer (in Holland), painter (Procuress, The Astronomer)?

John Keats, Romantic poet?

Sir Humphrey Davy of London patents the miner's safety lamp.?