Rebecca Hersher

NASA has big hopes for virtual reality technology. The agency is developing a suite of virtual reality environments at Goddard Spaceflight Center in Maryland, that could be used for everything from geological research to repairing orbiting satellites.

One displays fiery ejections from the Sun. In another, scientists can watch magnetic fields pulse around the earth. A virtual rendering of an ancient lava tube in Idaho makes scientists feel like they're standing at the bottom of an actual cave.

Juan Flores and his family live in Galena Park, Texas, which is bordered on three sides by pipeline terminals, oil refineries, fertilizer plants and rail yards.

Flores has lived in the town of about 11,000 people just east of downtown Houston since he was 4 years old. For a while, he even served on the City Council.

Shannan Wheeler was born and raised in Baytown, Texas, an industrial suburb east of Houston that is part of the so-called chemical coast.

Houses are tucked between chemical storage tanks. Parks back up to refinery smokestacks.

The floodwaters from Hurricane Harvey had to go somewhere.

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Last week's mass shooting in Las Vegas posed a test for new medical residents and fellows at the University of Nevada, Las Vegas hospital. They were in their first days on the job. NPR's Rebecca Hersher met two young surgeons.

Dr. Christopher Fisher was working at Sunrise Hospital and Medical Center just off the Las Vegas strip on Sunday evening when the patients starting arriving.

"It did look a bit like a war zone, can't say that it didn't," he remembers. "Frantic families, blood in the hallways."

People came in so grievously injured and so many at a time that Fisher, who is the medical head of trauma services for the hospital, and his colleagues used markers, writing directly on patients, to do triage.

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Hurricane Harvey flooded more than a dozen Superfund toxic waste sites when it devastated the Texas coast in late August. An EPA report predicted the possibility of climate-related problems at toxic waste sites like those in Texas, but the page detailing the report on the agency's website was made inactive months before the storm.

Flu symptoms can be more severe when you're pregnant, landing women in the hospital, threatening their lives and even leading to preterm birth or miscarriage. The virus is a risk to the woman and the baby.

So, it's particularly important that people who are pregnant get the flu vaccine. And it's also important that the effects of those vaccines be studied in pregnant women.

When Alexia Boggs was applying to law school, she initially considered all the big specialties, but none of them seemed quite right.

"I was looking for a field of law where none of my family could ever seek my help," she says, sarcastic but also not really joking.

On the first sunny day in Houston after about 50 inches of rain, residents in the east Houston community of Manchester emerged from their homes and gave thanks that their neighborhood had been spared in the floods. "Mama, yeah, I just feel blessed," said 73-year-old Maria Julia Rodriguez, standing in her driveway in late August and marveling at her luck. "God was looking out for us, I guess."

Medical workers in Houston are dealing with a secondary problem after last week's floods: Clinics that offer methadone and other opioid addiction therapies are just getting back up and running, and many people don't have access to the treatments they need.

Updated at 8:15 p.m. ET

Officials are still trying to confirm whether Texas floodwaters have spread contamination from decades-old toxic waste sites, as water recedes and residents return to homes that, in some cases, were flooded with water that passed over known contaminated areas.

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In northeast Houston, grocery stores are boarded up. Gas stations are closed. Streets are covered in a thin layer of dusty mud.

And, on block after block, homes are full of people; some returning after harrowing rescues and frustrating nights in shelters, others who never escaped their apartments as the water rose.

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