Mika has penned an emotional letter to the people of Lebanon following the giant explosion that took place in Beirut last week.The explosion, which happened in the Lebanon capital on Tuesday (August 4), has killed nearly 80 people and injured 4,000.The New York Times reported that the explosion was caused by a fire at a warehouse at Beirut’s port, and that “highly explosive materials” that the government seized years ago were found at the blast site.British singer-songwriter Mika, who was born