![]() ![]() Q: I know why birds fly south for the winter, but why do they come back in the spring? When the snow melts in the spring, the water stimulates the tiny larvae to all hatch at the same time, resulting in explosive populations of what are called “floodwater” mosquitoes. Other species lay cold-tolerant eggs in snow-covered grassy depressions or near riverbanks. Before they can lay more, they must blood-feed on nesting birds and arctic mammals like snowshoe hares. In spring, they become active again and lay their first batches of eggs, without needing to blood-feed. Adult females of some species emerge in the fall to mate and immediately seek a sheltered spot to hibernate for the winter. They have two main strategies, explains Yvonne-Marie Linton, curator of the National Mosquito Collection, which is housed in the Smithsonian. Q: There are swarms of mosquitoes in the Arctic. A February 2020 trip from New York to London used it to set a record for 4 hours 56 minutes. Today, airlines don’t schedule flights based on the unpredictable jet stream, but dispatchers use it when they can. The Japanese used Ooishi’s research during World War II: They sent balloon bombs, carried by the jet stream, to the western United States. His findings, originally published in Esperanto in the 1920s, were essentially ignored. But the Japanese meteorologist Wasaburo Ooishi had already described this effect. Post noticed strong currents at around 30,000 feet and used them for a record-setting flight from Los Angeles to Cleveland in 1935. O’Connell III | Taylors, South CarolinaĪmerican aviator Wiley Post is sometimes credited with discovering what he called the “prevailing wind channel,” says Bob Van der Linden, curator in the aeronautics department at the National Air and Space Museum. ![]() President Harding commuted his sentence in December 1921. 9653,” brought him nearly one million votes, says Claire Jerry, curator of political history at the National Museum of American History. His fifth and final run, promoted with a campaign button that read “For President Convict No. The 1920 loss didn’t come as a surprise to Debs, who had run four times before. ![]() He was convicted of violating the Espionage Act of 1917, after the prosecution argued that his antiwar speech obstructed military enrollment. Two years earlier, Debs, a labor leader, had spoken out against America’s involvement in World War I. Debs was in an Atlanta penitentiary, serving a ten-year sentence, when he lost the 1920 presidential election. Q: Has anyone ever run for president while in prison?Įugene V. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |