Focusing on four sectors — STEM, justice, development and investment — we rounded up some of the city’s key leaders: a district attorney, a med school dean, the head of an FBI office and enough CEOs to rival “Shark Tank,” to get their take on how women are perceived in their industries, how that perception has changed over time and what it will take to truly reach parity.

Forty percent of homeless youth are lesbian, gay, bisexual or transgendered, compared to just 10 percent for the larger population. Across the United States, there are somewhere around 320,000 to 400,000 homeless LGBT youth. There are roughly 4,000 shelter beds total. Enough to sleep just one percent.

There’s an old joke from the TV series “Friends”: Ross complains about how he’s torn between two women, so Chandler replies, “This must be so hard. Oh no, two women love me. They’re both gorgeous and sexy. My wallet’s too small for my fifties and my diamond shoes are too tight!” That’s the typical reaction when people hear about wealth psychology…

Think of it as The Deodorant Problem. If you’re marketing a brand, it’s easy to sling the sex appeal of wine, cars or a hot new phone. But what if the product is a tad mundane and even a little stinky?  How do you convey the emotional appeal of, say, unclogging a toilet? If you’re Jimmy Crabbé, you crack this problem with an inspired move that no one saw coming.

You know That Guy. He wears too much Axe body spray, he makes loud personal calls while you’re trying to work, he chews food with his mouth open. He’s a close-talker with his shirt open one button too far. He’s also really good at his job. If you’re a manager, what do you do with That Guy?

Too many pregnant mothers know the feeling of horror: The ultrasound reveals something wrong. Perhaps it’s nothing. But maybe it’s life-threatening, a disease or a disability. Maybe it’s the unthinkable. For hundreds of thousands of years, the unthinkable — babies doomed to die or develop impairments before drawing their first breath — meant only tragedy and heartache. Now there is hope.

Let me take a wild guess: You feel like you don’t get enough sleep. Too much to do, you’re stressed out and you think getting eight hours of sleep is about as realistic as keeping current on Oprah’s Book Club. Or maybe you’re annoyed that your body needs too much sleep? Think of all the workouts you could get in, books you could read and emails you could return with a few extra hours in each day. Wouldn’t we all love to train our bodies to require less sleep?

Construction guru C.C. Myers has, for more than two decades, been California’s go-to guy when roads are ravaged by acts of God (like the ’94 Northridge earthquake) or the toll of time (Folsom’s Lake Natoma Crossing, Interstate 5 in Sacramento, Route 99 in Turlock, the Walnut Creek Interchange, and the list goes on). The New York Times once called him the “Miracle Worker Highway Man.”

There are 6 million people in the United States who are paralyzed. Wide-spread, thought-controlled medical solutions won’t be available tomorrow or next month or even next year. But what if, some day, all of those people could walk again?

“Eat local.” You’ve heard the phrase a billion times. It’s the guiding principle of the farm-to-fork movement, nudging us away from the Industrial Food Complex and toward our neighborhood farms. But there’s something even more local than a ranch down the road: the orange tree in your front yard. 

On opening day of the 2014 baseball season, New York Mets second baseman Daniel Murphy was noticeably absent. He wasn’t benched. He didn’t have the flu. He simply took advantage of Major League Baseball’s paternity leave policy, which grants 72 hours off, to attend the birth of his son.

And all hell broke loose.

Two hundred million Chinese tourists will pack their bags and depart their homeland in 2020, bound for destinations across the globe. It’s not a mass exodus; they’re not  fleeing their government. They’re tourists, and, according to CNN, they might be the greatest phenomenon to hit the  global travel industry since the invention of commercial flight.

It started with a girl. She had played tennis in college. Desperate to impress her, I challenged her to a match. Sure, I had never played, but I could hold my own.

Think of your best friend, a friend that knows all your ticks, hobbies and vices. Now imagine this friend happens to be a doctor, and she’s your doctor.

About a decade ago, as a financial analyst for Intel, I lived in the suburbs of Santa Clara and frequently traveled to Folsom. It was a good job, especially for a kid straight out of college — decent pay, strong company and the lure of glittering stock options.

So I left.

I’ve always snickered at yoga.It just seemed ridiculous. But men are flocking to yoga the way we once, in the ’80s, took to this thing called “jogging.” We’re learning that yoga bestows a slew of health benefits — physical, mental, even sexual. But new research also points to increased health risks for men, and this muddies the decision.

Scientists, engineers and entrepreneurs are racing to give farmers tools to boost agricultural productivity. These five technologies — some big, some small — could change the face of farming.

In one of the crueler twists of sports, ACL tears often happen in freak accidents that you can’t really control. Seventy percent occur without contact. Even more cruelly, a woman is four times more likely than a man to tear the ligament — especially if she’s young and active.

Today’s small farmer climbs an uphill battle to find land, secure capital and overcome the hefty start-up costs. Today, farmers make up less than 1 percent of the population (compared to 15 percent in 1950), they tend to be older (the average age is 57) and about 25 percent are expected to retire in the next 20 years. “This is a new problem for human society,” writes Sharon Astyk, author of “A Nation of Farmers.”

I have an especially stupid case of insomnia, but we as a society are rotten sleepers and I’m not alone. Since doctors recommend seven to eight hours a night, about half the population is sleep deprived. We’re a nation of walking zombies. 

Eighty percent of women say they’d rather be dead than in a nursing home.

It’s a seductive pitch: Cleanse your body. Feel healthy. Lose weight.

You only have to do one thing: starve.

Kathy has a secret. Every morning she creeps out of bed before her husband wakes up, slips into the bathroom and meticulously conceals the balding spots on her head. “My husband doesn’t know what I’m up to,” she says, laughing.

Like roughly 30 million other women, Kathy suffers from female androgenetic alopecia, or pattern baldness.

Let’s say you’re in a glitzy Beijing restaurant. Your waiter uncorks a $300 bottle of Cabernet Sauvignon. He pours you a glass and you sip it, savor it, let it breathe. But around the table, everyone else gulps theirs down one swallow, like a shot, yelling “Gan bei!”

Welcome to wine culture in China.

Low testosterone. For men, these words have the same foul odor as “impotence,” “shrinkage” or “Justin Bieber.” The topic is taboo. Throughout civilization testosterone has been prized as the lifeblood of manhood, so a deficit would imply, by definition, that we are somehow less manly.

We live in a world of labels. And right or wrong, the labels we choose have an impact on how others perceive us — even during the holidays.