LA Times Science Files for 2007/06/01

These are items compiled by staff of the LA Times.

• INFECTIOUS DISEASES
  Border alert on TB patient disregarded
  

  DENVER – A man infected with an extremely dangerous strain of tuberculosis was waved into the United States at a border crossing even after a routine check of his passport set off an urgent warning, authorities said Thursday. By Jia-Rui Chong, Stephanie Simon and Nicholas Riccardi, Times Staff Writers.

• MEDICINE
  Cancer reported in Sept. 11 first responders
  

  NEW YORK – Some of the first responders who were exposed to the cocktail of toxins produced at the World Trade Center collapse are developing a form of cancer often seen in much older people, in what one doctor calls the “third wave” of disorders to emerge from the Sept. 11 disaster. By Delthia Ricks, Newsday.

• ENVIRONMENT
  Plan to clean air may kill ambience
  

  Regulation would limit wood-burning fireplace construction and use. By Janet Wilson, Times Staff Writer.

• GLOBAL WARMING
  Bush offers to take climate lead
  

  WASHINGTON – On the eve of a major international summit, President Bush proposed Thursday that the United States and the other nations that produce most of the gases responsible for global warming initiate a campaign to limit emissions and set long-term goals for reductions. By James Gerstenzang and Richard Simon, Times Staff Writers.

• GLOBAL WARMING
  NASA chief not worried about global warming
  

  The head of NASA, Michael D. Griffin, said Thursday that he was not sure whether global warming was “a long-term concern or not.” By Alan Zarembo, Times Staff Writer.

• FOOD SAFETY
  China speaks out on food safety
  

  Officials defend their nation’s record after scandals set off alarms around a world increasingly reliant on its exports. By Ching-Ching Ni, Times Staff Writer.