By Robert McSweeney

Up to three quarters of the world’s population could be at risk from deadly heat extremes by the end of the century, a new study suggests.

The research finds that just under a third of the global population is currently exposed to heat extremes that have resulted in deaths in the past. This will increase as global temperatures rise.

Keeping global warming to less than 2C above pre-industrial levels would limit the number at risk from potentially lethal heatwaves to around half of the global population.

First-such research to examine more than 100 years of data; UW environmental-health specialist is co-author

By Ashlie Chandler

Humans are acclimating to higher temperatures on Earth, according to a study co-led by Kristie Ebi, a University of Washington professor in the School of Public Health.

By THE ASSOCIATED PRESS

WASHINGTON — In its brief lifespan, the mosquito that carries the Zika virus is caught in a race: Will it pass the disease to humans before it dies?

Weather might make the difference. Scientists say the hotter it gets, the more likely the insect can spread disease.

By Cheryl Katz

PUBLISHED Mon Feb 01 05:30:13 EST 2016

Update: The World Health Organization declared Zika a global emergency on Monday. The declaration by the UN agency likely will increase funding and research efforts to control the outbreak.