| The Monitor (Episode 16)--In the Dark about White Matter No More [More] rss.sciam.com |
Hunting for a Mammoth in the Yukon [Slide Show] This week, SciAm frequent contributor Charles Q. Choi spends his days in the Yukon on an expedition with researchers from the American Museum of Natural History in New York City. Their goal: to recover intact DNA from mammoths, which once roamed the tundra but went extinct some 11,000 years ago.Slide Show: Mammoth Excavation Photos [More] rss.sciam.com |
Are Volcanoes or Humans Harder on the Atmosphere? Dear EarthTalk: Could it really be true that a single large volcanic eruption launches more greenhouse gases into the atmosphere than the amount generated by all of humanity over history? -- Steve Schlemmer, London, England [More] rss.sciam.com |
Ted Williams becomes last player to hit .400 On this day in 1941, the Boston Red Sox's Ted Williams plays a double-header against the Philadelphia Athletics on the last day of the regular season and gets six hits in eight trips to the plate, to boost his batting average to .406 and become the first player since Bill Terry in 1930 to hit .400. Williams, who spent his entire career with the Sox, played his final game exactly 19 years later, on September 28, 1960, at Boston’s Fenway Park and hit a home run in his last time at bat, for a career total of 521 homeruns. Williams was born on August 30, 1918, in San Diego, and began his major league career with the Red Sox in 1939. 1941 marked Williams' best season. In addition to his .406 batting average--no major league player since him has hit .400--the left fielder led the league with 37 homers, 135 runs and had a slugging average of .735. Also that season, Williams, whose nicknames included "The Splendid Splinter" and "The Thumper," had an on-base percentage of .553, a record that remained unbroken for 61 years, until Barry Bonds achieved a percentage of .582 in 2002.In 1942, Williams won the American League Triple Crown, for highest batting average and most RBIs and homeruns. He duplicated the feat in 1947. In 1946 and 1949, he was named the American League's Most Valuable Player and in June 1960, he became the fourth player in major league history to hit 500 homers. He was selected to the All-Star team 17 times.Williams played his last game on September 28, 1960, and retired with a lifetime batting average of .344, a .483 career on-base percentage and 2,654 hits. His achievements are all the more impressive because his career was interrupted twice for military service: Williams was a Marine Corps pilot during World War II and the Korean War and as a result missed a total of nearly five seasons from baseball.Williams, who was inducted into the Baseball Hall of Fame in 1966, managed the Washington Senators (renamed the Texas Rangers in 1972) from 1969 to 1972. In 1984, the Boston Red Sox retired his uniform number (nine). Williams died of cardiac arrest at age 83 on July 5, 2002, in Florida. In a controversial move, his son sent his father’s body to be frozen at a cryonics laboratory. history.com |
Yosemite National Park established On this day in 1890, an act of Congress creates Yosemite National Park, home of such natural wonders as Half Dome and the giant sequoia trees. Environmental trailblazer John Muir (1838-1914) and his colleagues campaigned for the congressional action, which was signed into law by President Benjamin Harrison and paved the way for generations of hikers, campers and nature lovers, along with countless "Don't Feed the Bears" signs.Native Americans were the main residents of the Yosemite Valley, located in California's Sierra Nevada mountain range, until the 1849 gold rush brought thousands of non-Indian miners and settlers to the region. Tourists and damage to Yosemite Valley's ecosystem followed. In 1864, to ward off further commercial exploitation, conservationists convinced President Abraham Lincoln to declare Yosemite Valley and the Mariposa Grove of giant sequoias a public trust of California. This marked the first time the U.S. government protected land for public enjoyment and it laid the foundation for the establishment of the national and state park systems. Yellowstone became America's first national park in 1872.In 1889, John Muir discovered that the vast meadows surrounding Yosemite Valley, which lacked government protection, were being overrun and destroyed by domestic sheep grazing. Muir and Robert Underwood Johnson, a fellow environmentalist and influential magazine editor, lobbied for national park status for the large wilderness area around Yosemite Valley. On October 1 of the following year, Congress set aside over 1,500 square miles of land (about the size of Rhode Island) for what would become Yosemite National Park, America’s third national park. In 1906, the state-controlled Yosemite Valley and Mariposa Grove came under federal jurisdiction with the rest of the park.Yosemite's natural beauty is immortalized in the black-and-white landscape photographs of Ansel Adams (1902-1984), who at one point lived in the park and spent years photographing it. Today, over 3 million people get back to nature annually at Yosemite and check out such stunning landmarks as the 2,425-foot-high Yosemite Falls, one of the world's tallest waterfalls; rock formations Half Dome and El Capitan, the largest granite monolith in the U.S.; and the three groves of giant sequoias, the world's biggest trees. history.com |