At age 61, Judi Polak is five years into a bleak diagnosis: Alzheimer’s disease. But last year she made medical history in a clinical trial, when a team of scientists, engineers and practitioners deployed a novel device to take aim at a big barrier in the fight against her illness. PBS NewsHour science correspondent Miles […]
Does marijuana hurt or help your brain? Scientists rush to study the drug’s impact
As national attitudes and laws around cannabis use have evolved, so have the commercially grown strains of the plant. Some marijuana varieties today contain levels of THC, the drug’s psychoactive compound, as high as 50 percent, compared to around 5 percent a generation ago. But as PBS NewsHour science correspondent Miles O’Brien reports, the effects […]
The stunning truth about asbestos use in the U.S.
Asbestos is no longer ubiquitous in building materials, and since it’s proven to cause cancer, many Americans likely assumed the substance had been banned entirely. But not only is asbestos a naturally occurring mineral, it is also still used to make some household products. PBS NewsHour science correspondent Miles O’Brien reports on “broken” U.S. regulation […]
What’s on your citrus fruit? Trump’s EPA fights to keep controversial insecticide in use
Citrus growers hope to fend off fruit-munching katydids, but one weapon is under scrutiny. Researchers found that children growing up near fields where the insecticide chlorpyrifos was deployed exhibited autism-like symptoms. A court ordered the Environmental Protection Agency to ban the insecticide’s use, but Trump’s EPA is fighting back. PBS science correspondent Miles O’Brien reports. […]
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