A new baseball statistic that could help the Chicago Cubs win, a new tool that could revolutionize the surgical removal of cancerous tumors and new images of Pluto and its largest moon, Charon. Museum of Science and Industry director of science and integrated strategies Rabiah Mayas joins us with these stories and more.

What can a mutant fruit fly can tell us about sleep? Why might forests in Alaska be contributing to climate change? And is Jupiter's Great Red Spot shrinking? University of Chicago paleontologist Neil Shubin is back to discuss these stories and more.

Chicago is not defined solely by its human residents. It’s a city with a living, evolving "ecological web of interactions" between man and animal, according to Gavin Van Horn. He joins "Chicago Tonight" to talk about "City Creatures," a book which details urban wildlife history through essays, poetry, photography and paintings.

Dark matter: we can't see it, but it's believed to make up 85 percent of all matter in the universe and without it we almost certainly wouldn't be here. Particle physicist and New York Times bestselling author Lisa Randall joins us to discuss her new book "Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe."

WGN meteorologist Tom Skilling tells us how a huge El Nino in the works could affect the upcoming winter. 

The drones are coming, and on Thursday the City Council debated new rules on where and when they can fly in Chicago. Paris Schutz has the details.

With an average of 60 to 70 meteors per hour and roughly one or two sightings per minute during its peak, the Geminids offers the most abundant, reliable meteor show of the year. Find out when to turn your eyes to the sky.

Simulating the evolution of the cosmos. A local physicist is here to talk about using supercomputers to delve into the mysteries of the universe.

It raked in nearly $250 million in its first weekend, garnering critical acclaim along the way. "Star Wars: The Force Awakens" is well on its way to becoming the highest-grossing movie of all time. Tonight, we revisit a 2013 "Chicago Tonight" report that introduced viewers to the Chicago computer scientists who helped make some key special effects in the very first "Star Wars" movie.

A breathtaking new book of photos captures the wild and natural wonders of Chicago. Meet the photographer and see some of his stunning work.

A new high-tech analysis of the fossilized jaw bone of Haramiyavia clemmenseni, one of our earliest ancestors, is shedding new light on the mammalian family tree. University of Chicago paleontologist Neil Shubin was one of the lead authors of the study and he joins us in studio to talk us through the findings.

Last month, Elon Musk's SpaceX successfully landed one of its Falcon 9 rockets back onto its launch pad. In November, Jeff Bezos’ company Blue Origin landed its sub-orbital capsule New Shepard. Space enthusiast and Fermilab physicist Don Lincoln recently wrote a column on the Musk versus Bezos competition and shares his insights.

The Penn State astronomer will discuss his involvement in an astrological event from 2014 which many at the time speculated to be a sign of alien life.