Everything you need to know about tests, revised quarantine guidelines, and forthcoming vaccines in the face of the Omicron variant. Plus, as the 122nd Christmas Bird Count wraps up, what can the data tell us about the future of bird species? And, a look at pizza science.

We talk our favorite science books of 2021. Plus, chemists have developed a new way to make eco-friendly glitter from plant fibers. And Francis Collins joins Ira to talk about his long tenure as director of the NIH, as well as how his Christian faith has informed his career in science.

A disaster-ologist and a movie curator discuss the role that disaster movies play in understanding the biggest challenges facing humanity. Plus, some tips on adding math to your holiday merriment. And how the physics of plasma, particles, and the Earth’s magnetic field combine in dazzling displays of aurora.

The next-generation James Webb space telescope—over 20 years in the making—could finally launch next week. Plus, in historically Black Protestant churches, regular attendees are much more likely to be vaccinated than those who come infrequently. And how to capture your favorite seasonal scents.

We look back at the year in space exploration. Plus, as the Colorado River Basin dries up, Indigenous communities want to make sure they have a seat at the water-distributing table. And Michael Pollan on the mind-altering powers of plants.

Scientists are rushing to understand the latest Omicron COVID variant. We talk what’s known about it and what isn’t. Plus, a breakdown of quantum computing. And a reflection from Ralph Nader on his auto safety campaign after 55 years.

Koji mold has transformed food for centuries—and it’s a perfect tool for culinary experimentation. Plus, the physics of your singing wine bottle. And, of course, we celebrate silly science with this year’s Ig Nobel awards.

With so many COVID test options on the market, what tests are best—and when should you use them to prepare for holiday gatherings? Plus, how scientists are using genetic sequencing to better understand how tumors are created.

Action on climate change is slower than many activists would like. And why payment for “loss and damage” is crucial for vulnerable nations. Plus, how California is grappling with a year-long fire season. And what we can learn from our bright and bushy friend, the squirrel.

We celebrate Science Friday’s 30th anniversary by remembering some of our favorite moments of the show. Plus, children aged 5 to 11 can now get Pfizer’s vaccine. What’s next? And, the road ahead for Kansas’ 20 year-old wind farm industry.