All good things must come to an end, even thought-provoking science lessons from Morgan Freeman.

The final four episodes of Through the Wormhole With Morgan Freeman will begin airing April 25 on Science Channel. The Emmy-nominated series, which has never shied away from difficult or uncomfortable subject matter (the existence of God, the science of racism), will go out with a bang: The May 16 series finale is titled “Is Gun Crime a Virus?”

“Every 17 minutes in America, someone is killed with a gun. Politicians can’t seem to stop the violence. But epidemiologists, psychologists and big data crunchers are discovering that gun crime spreads like a virus — and science may be able to stop it,” the synopsis says.

Season 7 resumes next month with “Is the Force With Us?” — a tip of the hat to the 40th anniversary of Star Wars. “This episode explores new research that is beginning to reveal a hidden force in the universe — one that penetrates space with trillions of invisible connections, instantly linking every place in our world and joining our future with our past.”

May 2’s “Can We Cheat Death?” is obviously of interest to everyone. “Scientists have discovered an immortal animal that may hold the secret of endless regeneration. They’re on the brink of editing our DNA so that we can cure death like a disease. Or is dying necessary for the survival of our species?”

And May 9’s “Can We Hack the Planet?” certainly sounds ominous. “Humanity is under threat — from storms that seem to get ever fiercer, earthquakes that seem ever more deadly, and killer viruses that are engulfing the globe. Some scientists think it’s time for us to fight back. Can we — should we — hack the planet?”

The final four episodes of ‘Through the Wormhole With Morgan Freeman’ begin airing April 25 at 10 p.m. on Science Channel. Freeman next stars in the film ‘Going in Style,’ in theaters April 7.



Read more from Yahoo TV:

• ‘Planet Earth II’ Preview: Watch Leopards Hunt in the City of Mumbai

• National Puppy Day: The 5 Best Puppy Moments From ‘The Tonight Show’

• ‘Survivor’ Recap: A Big Twist Causes Chaos at Tribal Council