March 16, 2009 |
Teas from across the globe are becoming more and more popular in the U.S. One relative newcomer, yerba mate, is attracting fans for its allegedly jitter-free caffeine boost and high antioxidant content. Lab research suggests some potential health benefits from drinking yerba mate, but studies of lifelong yerba mate drinkers in the tea's native South America suggest the brew increases the risk of some cancers -- a fact most marketing campaigns omit.
March 5, 1987
Calcium supplements, once believed harmless insurance against osteoporosis, can actually contribute to poor bone development by blocking the absorption of manganese, a key trace element in bone development. "There is a manganese absorption problem associated with the use of calcium supplements, especially in large doses," said Constance Kies, Ph.D., who works at the University of Nebraska, Lincoln, and with the Dairy Council of California.
January 22, 1985 |
Norway will cut imports from South Africa by 50% this year because of Pretoria's policy of apartheid, Commerce Minister Asbjoern Haugstvedt said in an interview published today. Norway has come under pressure to take action on growing trade with Pretoria since the Nobel Peace Prize was awarded in December to black anti-apartheid campaigner Bishop Desmond Tutu. South Africa's main export to Norway is manganese ore.
November 2, 1990 |
Ethyl Corp., a Richmond, Va.--based chemical company, on Thursday temporarily withdrew its application for approval of a gasoline additive designed to reduce emissions, just days before a deadline for the Environmental Protection Agency to act on it. After meeting with EPA officials Wednesday, the company said it needed more time to answer questions raised about HiTEC 3000, a manganese-based additive that the company contends would reduce emissions while boosting octane in unleaded gasoline.
August 10, 1989
The City Council has approved hiring a Pasadena engineering firm to study how to remove excessive iron and manganese from a municipal water well. James M. Montgomery Engineers Inc. has been awarded a $20,000 contract to figure out how to treat the well, which the city built last year but never operated because the chemicals exceeded state health limits. The study will also determine how much it will cost to remove the contaminants, Public Works Director Joseph Y. Wang said.