'Silent killer': Millions of poor in developing nations menaced by heat

BHUBANESWAR - On a hot, humid afternoon on the outskirts of Bhubaneswar in eastern India, construction worker Sabitri Mahanand frets about increasingly "dangerous" summers.

Carrying more than a dozen bricks on her head, she fears getting sunstroke while at work, but home offers no respite.

"When the day's work is over, I'm so exhausted that I often don't want to cook food but I have no choice," said Mahanand, 35, wiping the sweat from her face with a cloth wrapped around her waist. "I have to feed myself, my husband and my son."