2010 saw the 40th anniversary of this pro-environment observance

1993: Daniel Day-Lewis is accused of an IRA bombing he had nothing to do with 2 of the 4 countries that have had prime ministers who were father & daughter,Bangladesh, India 2 of these dedicated to virgin St. Agnes of Rome are blessed each year & their wool is used to make sacred garments 2009: Sherlock Holmes to Jude Law's Dr. Watson,Robert Downey 3 of the 4 Star Wars movie characters with Darth in their names,(3 of) Darth Maul, Darth Vader, Darth Sidious 3 Rays have won Olympic gold medals in boxing for the U.S.: Ray Mercer, Ray Seales & this sweet guy 4 English Channel lighthouses have been built on the Eddystone Rocks, famed cause of these disasters 6 letters, score 24: Composed of silicon dioxide, it's the most abundant mineral on Earth's surface