January 17, 2004 |
An inmate who spent two decades on death row before DNA evidence exonerated him walked out of prison a free man, saying he just wanted to get home and be with his family. Nicholas Yarris is the first Pennsylvania death row inmate cleared by DNA testing. Yarris' 1983 conviction for rape and murder was overturned last summer when DNA tests proved that genetic material found on the victim belonged to someone else.
September 8, 2007 |
Alnylam Pharmaceuticals Inc. and Isis Pharmaceuticals Inc. have formed a venture uniting Nobel Prize winners David Baltimore and Phillip Sharp to create drugs from a newly discovered class of genetic material. The venture, Regulus Therapeutics, will have exclusive licenses from Alnylam and Isis for technology focused on so-called microRNAs. The molecules regulate networks of genes that may be involved in diseases including cancer, viral infections and metabolic disorders, the companies said.
June 1, 1999 |
Scientists in Hawaii have cloned a trio of identical mice using ordinary cells rather than DNA extracted from the female reproductive system. This time, the cloned critters were male. The clones grew using genetic material extracted from tail cells of adult male mice, but only one grew to adulthood, according to a study in the June issue of the journal Nature Genetics.
December 11, 2004 |
Scientists have identified the cause of Werner syndrome, a rare accelerated aging disease whose sufferers prematurely develop gray hair, wrinkled skin, cataracts, cancer and heart disease, dying in their 40s. Researchers at the Salk Institute for Biological Studies in La Jolla reported in the journal Science that patients with Werner syndrome couldn't properly replicate the ends of their chromosomes due to a defective gene, WRN.
January 23, 2005 |
It has long been a matter of contention: Was the Aztec and Mayan practice of human sacrifice as widespread and horrifying as the history books say? Or did the Spanish conquerors overstate it to make the Indians look primitive? In recent years archeologists have uncovered mounting physical evidence that corroborates the Spanish accounts in substance, if not number.
February 5, 2014 |
The scooter market is an increasingly crowded and competitive segment of the U.S. motorcycle business. Going after the urban commuter dollar are everything from inexpensive rides like the Kymco Like to high-powered freeway fliers like the Suzuki Burgman to super deluxe $10,000 models like the Vespa 946. Honda is splitting the difference and aiming for the middle of the target with its 2014 Forza. LANE-SPLITTING CONTROVERSY: Guidelines from the CHP Sharing some genetic material with Honda's earlier Helix and Reflex scooter lines, the Forza is a sleek, smart-looking 300cc unit that features smooth power, a liquid-cooled and fuel-injected engine, an optional anti-lock ABS braking system and capacious storage.
December 24, 2001
British scientists have mapped chromosome 20, the third and longest chromosome to be sequenced in the Human Genome Project. Chromosome 20 is best known for harboring genes that contribute to forms of the brain-wasting Creutzfeldt-Jakob disease and severe-combined immunodeficiency, an illness in which the immune system is crippled. Chromosome 20 contains 727 genes and accounts for about 2% of the total human genetic material, the team reported in the Dec. 20 issue of Nature.
October 11, 2008 |
Scientists have confirmed the second case of a "virgin birth" in a shark. In a study reported Friday in the Journal of Fish Biology, scientists said DNA testing showed that a pup carried by an Atlantic blacktip shark at the Virginia Aquarium & Marine Science Center contained no genetic material from a male. In 2007, the female shark died of complications from an unknown pregnancy. Her pup was found during a necropsy. No male blacktips were present in her eight years there.
December 19, 2000 |
Scientists at Texas A&M University in College Station unveiled a disease-resistant black Angus bull, saying it could lead to safer beef and more efficient ranching worldwide. The month-old calf, called Bull 86 Squared, was cloned from genetic material frozen 15 years ago from Bull 86.