Why do we find twins so fascinating?

And what's it really like to be one?

Five sets of twins get real about the ups and downs of moving through the world with someone who looks exactly like you.

From dressing alike to developing secret languages, Now or Never producer Jessica Singer and her twin sister Nicole kick the show off by answering all your nosy questions about life as a twin.

For first-time parents Kim Miller and Robert Jiang, having toddler twins has been a handful. But Robert’s mom Sufan Lu has jumped in to become a lifeline for Kim and Robert, and a delight to her grandchildren. Find out why all parents of multiples need a nai nai (grandmother) like Sufan in their lives.

Identical twins Niko and Marko Martinovic grew up pulling off pranks together, switching spots on unsuspecting friends and family. Today they've turned those pranks into a full-time job, as the creators and stars of the "Even Out Twins" on YouTube. But ten years in, Niko and Marko are starting to question how constantly assuming the same identity has affected their individuality.

Rory and Camilla Turnbull were born identical twin sisters, but now that Rory has come out as trans they’re navigating life as brother and sister for the first time.

Mercedes Sheen vividly remembers the time she fainted dramatically in the dining hall at primary school. But her twin sister, Michaela Sheen, insists it was she who fainted dramatically that day. These sorts of disagreements are what Mercedes calls “disputed memories,” and it's a phenomenon that happens mostly with twins. Mercedes and Michaela reunite to tell us how this unique twin experience (and childhood argument) led Mercedes to do a PhD on it.

Twin sisters Chantal and Jeannelle Tousignant aren’t just best friends. At the age of 35, they've decided they'll also be lifelong roommates. How a low point in each of their lives caused them to move back in together, and led to a surprising realization they share the same life dream -- one they only want to achieve together.

What happens after you witness something you can't get out of your mind?

Today on Now or Never, stories from the bystanders, and how their lives changed in the aftermath.

Trevor asks strangers on the street to share the most memorable thing they've ever witnessed, from northern lights to Beyonce sightings.

As a kid growing up in Barrier Lake, Quebec, Shannon Chief has a vivid memory of coming across 12 moose in the woods one cold wintery night, "like grandfathers standing around me." Today, seeing a moose in the wild is rare. As Shannon and elders witness the animal’s decline, they’ve banded together to take action to stop sport hunting in a Quebec wilderness reserve.

Marla Minshall has been supported by friends and family all their life. Now they’re looking for a chance to do the same for others - by serving as a witness at strangers' weddings.

Darrell Warren is determined to fight crime in his neighbourhood. At 64 years old, he’s voluntarily staking out suspected drug houses in Winnipeg’s North End, and starting a tip line so other community members can come forward as witnesses. But is it safe?

When Ti-Anna Wang was 13, her father — Chinese pro-democracy activist Dr. Wang Bingzhnag — was charged with terrorism and espionage and sentenced to life in prison in China. Much of Ti-Anna’s life has been spent advocating for her father’s freedom, but today she’s ready to embrace a new chapter.

Your long weekend just got better, because Now or Never’s latest podcast just dropped and we’re taking you on adventures across the country.

We start in Winnipeg, where Trevor has been wondering about a huge pirate ship in someone’s backyard for years. Today, he knocks on the door and meets “Captain” Doug Cook and discovers how his dream of a place where his grandchildren could play has helped him deal with loneliness after the death of his wife.

Farkhunda Muhtaj had big dreams of kicking her way into soccer history this summer, playing for the Calgary Wild FC as part of Canada’s first women’s pro soccer league. A tendon injury has kept her on the sidelines for now, but Farkhunda is doing everything in her power to get back on the pitch - carrying the dreams of young Afghan soccer players on her shoulders.

The bustling Rawlins Cross intersection in downtown St. John’s, N.L. is notorious for collisions. But when the weather gets warmer, 87-year-old William Pryse-Phillips gives people in the area a reason to stop and smell the roses…literally.

It’s been a tough year for beekeepers in Manitoba, but that isn’t stopping 18-year-old April Steppler from following her dad, Ian’s footsteps, and managing her first hive ever. Trevor visits the apiary to find out what’s hurting the bees and how this father/daughter team is determined to make the best of the season.

In a Nova Scotia forest, Nina Newington and Lisa Proulx are putting up tents, turning on camp stoves, and settling in for a summer of trying to protect the forest from logging. Their tools are tiny —endangered lichens almost imperceptible to the naked eye — but their love for the forest is big, and determination is growing by the day.

Finally, listeners call in their favourite sounds of summer.