Cities like Houston are dotted with air-sniffing monitors that measure levels of benzene and other potentially unhealthy air pollutants. But those monitors can't answer the question we care about most: Is the air safe?
That's because there's no simple relationship between toxic air pollutants and health risks. Researchers at the University of North Carolina in Chapel Hill are trying to get a leg up on that problem. They are building an instrument that uses human lung cells to measure health hazards in the air more directly.
Brazil is a paradise for birds; the country has more than 1,700 species. Among them is the colorful toucan, a bird with an almost comically giant bill that can be half as long as its body. There are lots of different types of toucan — red-breasted, channel-billed, keel-billed, saffron toucanet — each with its own color-scheme and distinctive call.
The clock is ticking for those who hope Illinois will become the 13th state to legalize same-sex marriage.
The Illinois General Assembly is scheduled to adjourn its spring session Friday night, and the marriage equality bill still has not been called for a vote in the state House, where supporters are struggling to round up the 60 votes necessary to pass it.
From New Mexico to New York, 10 state university systems have announced they are joining the ranks of elite institutions embracing the massive open online course, or MOOC, system.
On Thursday, they unveiled a landmark partnership with Coursera, a for-profit tech company with 3.5 million registered students. It's the biggest effort to catapult degree-granting institutions into the world of global education.
When Herman Boudreau joined the U.S. Army in 1941, he set in motion a lifetime of public service. Boudreau, who died in April at age 93, served in the Army in New Zealand and the South Pacific during World War II.
He spent more than two years fighting the Japanese, and years later shared many of his war experiences with his daughter, Nancie Smith. In one incident, she says, he had to secure an airfield while removing the last Japanese resistance on three occupied islands.