Dave Ulrich, cofounder of the RBL Group and coauthor of "The Leadership Code: Five Rules to Lead By."

Ron Heifetz, founder of the Center for Public Leadership at the Harvard Kennedy School and coauthor of "The Practice of Adaptive Leadership."

Dr. Thomas Lee, network president of Partners HealthCare System and professor of medicine at Harvard Medical School.

Cathleen Benko, vice chairman and chief talent officer for Deloitte LLP and coauthor of "The Corporate Lattice."

Herminia Ibarra, professor of organizational behavior at INSEAD and coauthor of the HBR article "Why Men Still Get More Promotions Than Women."

Peter Cappelli, Wharton School professor and coauthor of "Managing the Older Worker: How to Prepare for the New Organizational Order."

Anthony Bourdain, celebrity chef and host of the Travel Channel's "Anthony Bourdain: No Reservations."

Robert Iger, CEO of Disney.

Morten Hansen, professor at the UC Berkeley School of Information and author of "Collaboration."

Robert Kaplan, Harvard Business School professor and author of "What to Ask the Person in the Mirror."

Rick Ridgeway, vice president of environmental initiatives at Patagonia.

Michael Beer, Harvard Business School professor and coauthor of "Higher Ambition: How Great Leaders Create Economic and Social Value."

John Coleman, coauthor of "Passion and Purpose," with contributors Patrick Chun, Umaimah Mendhro, and Rye Barcott.

Christiane Amanpour, renowned war correspondent and news anchor.

Marcus Buckingham, founder of TMBC and author of "StandOut."

Boris Groysberg and Michael Slind, authors of "Talk, Inc.: How Trusted Leaders Use Conversation to Power Their Organizations."

Frank Barrett, jazz pianist and author of "Yes to the Mess: Surprising Leadership Lessons from Jazz."

Nancy Koehn, Harvard Business School historian and editor of "The Story of American Business."

Gautam Mukunda, Harvard Business School assistant professor and author of "Indispensable: When Leaders Really Matter."

Joseph Badaracco, Harvard Business School professor.

Gianpiero Petriglieri, professor at INSEAD, on the new global elite.

Herminia Ibarra, author of "Act Like a Leader, Think Like a Leader" and professor at INSEAD, on moving forward, even when it's not comfortable.

The Hollywood icon explains why she moved from acting to producing and directing, then launched a foundation that teaches mindfulness to kids.

Heidi Grant Halvorson, author of "No One Understands You and What to Do About It," explains the science of perception.

Dorie Clark, author of "Stand Out," on having more influence.

Bill George, Harvard Business School professor and author of "Discover Your True North," gives advice to both new and experienced leaders.

There's a lot of crying and shouting both in politics and at the office. Gautam Mukunda of Harvard Business School and Gianpiero Petriglieri of INSEAD help us try to make sense of it all.

Darrell Rigby of Bain and Jeff Sutherland of Scrum explain the rise of lean, iterative management tactics, and how to implement them yourself.

Mark Blyth of Brown University and Gianpiero Petriglieri of INSEAD discuss Britain's vote to leave the European Union.

Tim Brown, CEO and president of IDEO, on breakthrough problem-solving.

Harvard Business School professor Nancy Koehn talks about the surprising election of businessman Donald Trump as U.S. president, and what leaders throughout history can tell us about bridging divides and leading in times of uncertainty.

Larry Summers, former U.S. treasury secretary, is calling on American business leaders to stand up to President Donald Trump. Summers sharply criticizes the administration’s protectionist agenda, and he says it’s time for executives to call out how those policies undermine the economy and the country's best interests in the long term.

Amy Gallo, HBR contributing editor, discusses a useful tactic to more effectively deal with conflict in the workplace: understanding whether you generally seek or avoid conflict. Each personality style influences how you approach a particular conflict, as well as how your counterpart does. Gallo talks about how to escape the common pitfalls of conflict seekers and conflict avoiders, so that you can improve your work and your relationships. She’s the author of the “HBR Guide to Dealing with Conflict.”

Phil Knight, former chair and CEO of Nike, tells the story of starting the sports apparel and equipment giant after taking an entrepreneurship class at Stanford and teaming up with his former track coach, Bill Bowerman. Together (and with the help of a waffle iron) they changed how running shoes are designed and made. Knight discusses the company's enduring culture of innovation, as well as the succession process that led to former runner and Nike insider Mark Parker becoming CEO.

Sue Ashford, a professor at the University of Michigan’s Ross School of Business, breaks down her decades of research on leadership—who achieves it, and how a group grants it. She explains that the world isn’t divided into leaders and followers. Instead, it’s a state that everyone can reach, whether they’re officially in charge or not. She also explains why shared leadership benefits a team and organization. Ashford offers tips on how to effectively grow leadership in yourself and your employees.

Sydney Finkelstein, a professor of management at the Tuck School of Business at Dartmouth College, encourages leaders to approach their direct reports like teachers. As Finkelstein explains, being a teacher-leader means continually meeting face to face with employees to communicate lessons about professionalism, points of craft, and life. He says it’s easy to try and that teaching is one of the best ways to motivate people and improve their performance. Finkelstein is the author of “The Best Leaders Are Great Teachers” in the January–February 2018 issue of Harvard Business Review.

Kenneth Frazier, the CEO of the pharmaceutical company known as MSD outside of North America, discusses his upbringing and how it influences his leadership as chief executive. He is one of the few African-American CEOs in the Fortune 500, and shot to prominence after resigning from a council advising the Trump White House. Frazier discusses the importance of values in leadership and how Merck thinks about R&D and drug prices.

Amanda Goodall, a senior lecturer at Cass Business School in London, argues that the best leaders are technical experts, not general managers. She discusses her research findings about doctors who head up hospitals, scholars who lead universities, and all-star basketball players who go on to manage teams. She also gives advice for what to do if you’re a generalist managing experts or an expert managed by a generalist. Goodall is the co-author of the HBR articles “If Your Boss Could Do Your Job, You’re More Likely to Be Happy at Work” and “Why the Best Hospitals Are Managed by Doctors.”

Kristie Rogers, an assistant professor of management at Marquette University, has identified a free and abundant resource most leaders aren’t giving employees enough of: respect. She explains the two types of workplace respect, how to communicate them, and what happens when you don't foster both. Rogers is the author of the article “Do Your Employees Feel Respected?” in the July–August 2018 issue of Harvard Business Review.

Katherine Phillips, a professor at Columbia Business School, discusses research showing that African-Americans are often reluctant to tell their white colleagues about their personal lives — and that it hurts their careers. She says people should expect and welcome differences at work, and she gives practical advice for strengthening connections among colleagues of different racial backgrounds. Phillips is a coauthor of the article “Diversity and Authenticity,” in the March–April 2018 issue of Harvard Business Review.

Sunil Gupta, a professor at Harvard Business School, argues that many companies are still doing digital strategy wrong. Their leaders think of "going digital" as either a way to cut costs or to attract customers with a flashy new app. Gupta says successful digital strategy is more complicated than that. He recommends emulating the multi-faceted strategies of leading digital companies. Gupta's the author of “Driving Digital Strategy: A Guide to Reimagining Your Business."

John Kerry, former U.S. Secretary of State, shares management and leadership lessons from his long career in public service. He discusses how to win people over to your side, bounce back from defeats, and never give up on your long-term goals. He also calls on private sector CEOs to do more to solve social and political problems. Kerry’s new memoir is "Every Day Is Extra."

Reshma Saujani, founder of Girls Who Code, is on a mission to get more young women into computer science. She says the problem isn't lack of interest. Her non-profit organization has trained thousands of girls to code, and the ranks of female science and engineering graduates continue to grow. And yet men still dominate the tech industry. Saujani believes companies can certainly do more to promote diversity. But she also wants girls and women to stop letting perfectionism hold them back from volunteering for the most challenging tasks and jobs. She is the author of the book "Brave, Not Perfect: Fear Less, Fail More, and Live Bolder."

Sinéad O'Sullivan, entrepreneurship fellow at Harvard Business School, discusses how space is much more important to modern business than most people realize. It plays a role in making food, pricing insurance, and steering self-driving cars. While moonshot projects from SpaceX to Blue Origin drive headlines, the Earth-facing space economy is booming thanks to plummeting costs of entry. As tech companies large and small compete to launch thousands of satellites, O'Sullivan says we are actually running out of space in space.

Deborah Ancona and Kate Isaacs, researchers at MIT Sloan School of Management, say many companies struggle to be nimble with a command-and-control leadership culture. They studied Xerox’s R&D outfit PARC and the materials science company W.L. Gore & Associates and found these highly innovative organizations have three kinds of leaders: entrepreneurial, enabling, and architecting ones. These roles work together to give direction and avoid creative chaos. Ancona and Isaacs are coauthors of the HBR article "Nimble Leadership."

Melinda Gates, cochair of the Bill & Melinda Gates Foundation and founder of Pivotal Ventures, is committing $1 billion over the next ten years to advance gender equality. She says evidence shows it's the best way to drive economic development in nations and performance in companies. She shares her own stories as a female executive at Microsoft, a working mother, and a nonprofit leader learning from women around the world. Gates is the author of the HBR article "Gender Equality Is Within Our Reach."

Rosabeth Moss Kanter, professor at Harvard Business School, believes the world demands a new kind of business leader. She says so-called “advanced leaders” work inside and outside their companies to tackle big issues such as climate change, public health, and social inequality. She gives real-life examples and explains how business leaders can harness their experience, networks, innovative approaches, and the power of their organizations to solve challenging problems. Kanter is the author of the book "Think Outside the Building: How Advanced Leaders Can Change the World One Small Innovation at a Time."

In 1915, polar explorer Ernest Shackleton’s ship became trapped in ice, north of Antarctica. For the next two years, he kept his crew of 27 men alive on a drifting ice cap, then led them in their escape. How Shackleton did that has become one of the most famous leadership case studies. In the first episode of a four-part special series on leadership, HBR Editor in Chief Adi Ignatius and Harvard Business School professor and historian Nancy Koehn analyze Shackleton’s leadership during the struggle to survive. They discover lessons in building a team, learning from bad bosses, and cultivating empathy.

In 1958, writer Rachel Carson began her exhaustive research on the effects of widespread pesticide use for her next book, Silent Spring. Over the next four years, she built up an airtight case showing how the world’s most powerful chemical companies were harming animals, plants, and people. Her effort was also a race against time, as she struggled against an aggressive form of breast cancer. In the second episode of a four-part special series on leadership, HBR Editor in Chief Adi Ignatius and Harvard Business School professor and historian Nancy Koehn trace the modern environmental movement back to Carson’s pioneering reporting and powerful prose. They discover lessons in how to strengthen your resilience, gather your energy and skills for a coming challenge, and why caretaking is an act of leadership.

Jim McKelvey, entrepreneur and cofounder of Square, says that most companies that think of themselves as innovative are really just copycats. True innovation, he argues, is about fearlessly exploring novel solutions and dramatically expanding markets. Doing so also helps startups defend their innovations against industry giants, as Square did against Amazon. McKelvey is the author of the book “The Innovation Stack: Building an Unbeatable Business One Crazy Idea at a Time.”