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A farmer sprays a soybean field in Granger, Iowa. There's new and detailed data on the impact of genetically modified crops on pesticide use. Those crops replaced insecticides, and, at first, some herbicides. But herbicide use has rebounded.

How GMOs Cut The Use Of Pesticides — And Perhaps Boosted It Again

There's new and detailed data on the impact of genetically modified crops on pesticide use. Those crops replaced insecticides, and, at first, some herbicides. But herbicide use has rebounded.

Raymond J. Lee and Jackie Chung in La Jolla Playhouse’s production of "Tiger Style!"

San Diego's Top Weekend Events: Choose Your Adventure

Do you feel like dancing? Or having a laugh? This weekend, there's an arts event for many moods.

Illumina's worldwide headquarters in San Diego's University City area is shown in this undated photo.

San Diego-Based Illumina Files Patent Infringement Lawsuits

The maker of DNA sequencing equipment alleges five European companies used Illumina technology without authorization for prenatal testing.

One of the most popular arguments against political correctness is that it stifles speech, but a Cornell study found that it boosted creativity in mixed-gender groups.

What Research Says About The Consequences Of PC Culture

Jonathan Chait's essay on a pervasive dangerous online culture of political correctness nearly broke the Internet. So does the science back him up?

The ruins of the Colosseum still makes a powerful impression.

NOVA: Colosseum - Roman Death Trap

Airs Wednesday, Nov. 4, 2020 at 9 p.m. on KPBS TV + Sunday, Nov. 8 at 9 p.m. on KPBS 2 (not available for streaming)

Bacteriophages, in red, look like tiny aliens, with big heads and skinny bodies. They use their "legs" to stick to and infect a bacterial cell, in blue.

Your Gut's Gone Viral, And That Might Be Good For Your Health

Think of it as a gift within a gift. Some beneficial gut bacteria contain viruses called "bacteriophages." And some of these phages now have been associated with good intestinal health in humans.

Studying? Take A Break And Embrace Your Distractions

This back-to-school season, it's time to reevaluate a few common assumptions about how best to study. Benedict Carey, the author of How We Learn, says science shows that discipline isn't everything.

Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say.

A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

New research suggests it may be possible to spot people in the early stages of Alzheimer's by testing their ability to recognize fragrances. The goal is a quick and inexpensive screening test.

For The New Year, Ray Bradbury's Buoyant Vision Of The Future

We saw a lot of dystopias in both films and books this year. Author Jason Sheehan has had enough. He plans to celebrate the new year with some science fiction that's actually hopeful about the future.

Einstein, A Hunch And Decades Of Work: How Scientists Found Gravitational Waves

Behind the headlines and news conferences announcing the discovery were decades of hard work, hundreds of scientists and more than a billion dollars in taxpayer funds.

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