Short answers, pulled from the story.
Dylan Thomas died at noon on the 9th of November 1953 at St. Vincent's Hospital in New York City. He was 39 years old and had never recovered from the coma he entered on the night of the 4th-the 5th of November. He was buried on the 25th of November at St. Martin's churchyard in Laugharne, Carmarthenshire.
Forensic pathologist Bernard Knight concluded that Thomas died of severe bronchopneumonia, with lung infection present before his hospital admission. Researchers D. N. Thomas and Simon Barton determined in a 2004 paper that the morphine administered by Dr. Milton Feltenstein on the night of the 4th of November was three times the medically appropriate dose and precipitated the coma. The post-mortem found three causes of death: pneumonia, brain swelling, and a fatty liver; his liver showed no sign of cirrhosis.
"Do not go gentle into that good night" is among his most recognized poems, a villanelle written as an ode to his dying father. "And Death Shall Have No Dominion" was the first of his poems published in a national journal, appearing in the New English Weekly in May 1933.
Under Milk Wood is a play for voices set in a Welsh coastal town, following its inhabitants through a single day. Thomas described an early version in Prague in March 1949 as a town declared insane, featuring an organist who played for animals and a baker with two wives. It was performed for the first time with a full cast at the Poetry Centre in New York in May 1953, and the BBC broadcast it in 1954 with Richard Burton in the lead role; it won the Prix Italia that year.
Thomas was born and raised in Swansea, living at 5 Cwmdonkin Drive until he was 23. He spent summers on the Llansteffan peninsula in Carmarthenshire, where family farms and Welsh-speaking communities gave him much of his imagery. His 1945 poem "Fern Hill" drew on memory of a dilapidated farm rented by his aunt, and his time in New Quay, Ceredigion, in 1944-45 produced the sketch that became Under Milk Wood.
Thomas recorded A Child's Christmas in Wales during his second American tour in 1952, and Caedmon Records released the recording that same year. The original 1952 recording was selected in 2008 for the United States National Recording Registry, which credited it with launching the audiobook industry in the United States.