Rebecca Hersher appears in the following:
Wednesday, August 16, 2017
As America prepares for the eclipse on Aug. 21, here are some basic facts about the phenomenon.
Tuesday, August 15, 2017
Wildfires are still burning in western Greenland, close to the Arctic island's ice sheet. As the fires burn, they release black particles that can coat the ice and snow, and make it melt more quickly.
Monday, August 07, 2017
New research suggests that when puppies have more attentive, active mothers, they're more likely to fail guide-dog training.
Sunday, July 30, 2017
Haiti's capital city doesn't have a sewer system. Instead, so-called nightsoil, or human excrement, is largely removed by hand by workers who toil at night under cover of darkness.
Saturday, July 29, 2017
What went wrong with Haiti's sanitation plan? The story involves the queen of Spain, the "sanitation champion" and the man with the worst job in the world.
Friday, July 14, 2017
Port-au-Prince, Haiti, is known for its terrible traffic, partly caused by lack of reliable street lights. So drivers there have come up with their own complicated language.
Saturday, June 24, 2017
Many people with Alzheimer's suffer medical and mental health issues that have nothing to do with memory loss, including slow healing, incontinence, paranoia and depression.
Saturday, June 17, 2017
When Greg O'Brien found out he'd be a grandfather, he was excited. He was also sad. His granddaughter, he knew, would never know the real him.
Thursday, June 01, 2017
Since ancient times, philosophers and scientists have viewed emotions as innate. In the latest Invisibilia, a psychologist argues that emotions spring from the sum of our experiences, not just wiring.
Monday, May 29, 2017
Despite support from the World Health Organization for the latest adult ADHD screening survey, some researchers worry that it will lead to over-prescribing of powerful amphetamines.
Tuesday, May 23, 2017
A review of child deaths after fatal car crashes found wide variations by state and region, and suggests state authorities could radically decrease child deaths by changing traffic safety laws.
Friday, May 12, 2017
Inflatable beds are increasingly popular, and their soft, impermeable surfaces, increase risk of sudden infant death. But they are often the only bed that a family can afford.
Friday, May 12, 2017
Health and Human Services Secretary Tom Price is touring communities that have been hit hard by painkiller overdoses and heroin. He says, when it comes to opioid abuse, "We're losing as a nation."
Monday, May 08, 2017
Old Italian violins like those made by Stradivari are famous for their ability to project their sound. But a study found people in a blind test thought new violins projected better than old ones.
Monday, May 01, 2017
Fasting every other day is no better for losing weight or keeping it off than restricting calories every day, a study suggests. And it's yet another example of how hard it is to study fasting.
Wednesday, April 26, 2017
Researchers tested more than 3,000 people at Munich's Oktoberfest beer festival. They found getting drunk was associated with abnormal heart rhythms.
Thursday, April 20, 2017
The agency expanded its warnings about prescription cough and pain medications that contain the narcotics codeine or tramadol, saying they can cause dangerously slow breathing in some kids.
Monday, April 17, 2017
Scientists at the University of California, Berkeley have figured out why shoelaces seem to come untied at the worst moments, like when you're running.
Friday, April 14, 2017
The overall increase in the number of Americans with health insurance draws attention to counties where the uninsured rate is still high, many of them in states that chose not to expand Medicaid.
Tuesday, April 11, 2017
Exposure to the tiny fibers in asbestos can lead people who work around the material to develop mesothelioma, a cancer of the thin membranes that line the chest and abdomen.