Topic: Mark Jacobson

STANFORD, Calif., Feb. 27 (UPI) -- A U.S. study suggests rising carbon dioxide levels in the Earth's atmosphere, although not considered a classic air pollutant, can cause respiratory failure.

PALO ALTO, Calif., Jan. 4 (UPI) -- A U.S. researcher has linked increased mortality to higher levels of carbon dioxide in the Earth's atmosphere.

LOS ANGELES, Feb. 14 (UPI) --

WASHINGTON, July 6 (UPI) --

SAN FRANCISCO, April 20 (UPI) --