“We set out to start a conversation,Girlfriend Who is Crazy About Big Things and with the power of your voices, we've started a movement."

These words from Mashable founder and CEO Pete Cashmore not only helped kick off the seventh-annual Social Good Summit on Sept. 18, but they remained a common thread throughout the summit's two days, both onstage and online.

With discussions ranging from the global refugee crisis to #BlackLivesMatter, the call to participate in the social good conversation and amplify the voices of others was heard loud and clear.

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SEE ALSO: 5 charming Joe Biden & Jill Biden moments from the Social Good Summit

Through the power of the social good community, the hashtag #2030NOW garnered more than 1.8 billion impressionsover the course of the summit's two days. The Social Good Summit was attended by 1,800 peoplein New York City, with more than 100,000 peoplewatching the global broadcast live and in the following days. This year's summit not only drew in speakers from across the globe, but was live streamed into seven different languages.

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The hashtag #2030NOW garnered more than 1.8 billion impressions on social over the Summit's two days.

In addition to an already stellar lineup of speakers, both days of the Social Good Summit featured a number of special guests. On the opening day, a surprise appearance by Yiech Pur Biel and Yusra Mardini of the Olympic Refugee Team ignited a message of hope that resonated throughout the following sessions. The final day featured the unveiling of the U.N.'s 17 Young Leaders, who were selected from more than 18,000 nominations. And introducing her husband's Cancer Moonshot address, Dr. Jill Biden addressed the crowd and also participated in her first-ever Facebook Live.

Below, you can check out this year's Social Good Summit highlights as they played out online. To watch the full sessions, visit livestream.com/mashable.

Read more of Mashable's coverage here, and visit the Mashable Social Good Facebook page to see some of this year's speakers featured on Facebook Live.

Opening Ceremony

Today at the Social Good Summit dancing with @tayd_dance for the @theglobalgoals #WhatIReallyReallyWant movement❤️ #spicegirls #globalgoals #2030now

A video posted by LARSEN THOMPSON (@larsenthompson) on

A Conversation with Chelsea Handler

The Refugee Agenda: Where We Are and Where We're Going

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Bad Weather: The Human Cost of Climate Change

In conversation with UN Special Envoy on El Nino and Climate, former President of Ireland, Mary Robinson. 60 million people around the world are affected by El Nino, two thirds in Southern Africa! Kenya's Ambassador Macharia Kamau is also a UN Special Advisor on El Nino and Climate. We all have a role to play in ensuring that we address climate justice and build resilience! #2030Now

A photo posted by Julie Gichuru (@juliegichuru) on

The Universal Pursuit Toward Health and Well-Being

Power Players: Women and Global Leadership

"Don't expect anyone to roll the carpet and welcome you in. You have to roll out the carpet yourself and kick the door in!" Helen Clark on women in politics in conversation with Bharka Dutt and Joyce Banda. ✔✔✔

A photo posted by Julie Gichuru (@juliegichuru) on

Changing the Face of Entrepreneurship

The Connected Generation: The Leaders of 2030

For the Kids, By the Kids

The Identity of a Refugee

Access to Education: Paving the Road Home

Photo by Stephanie Sinclair @stephsinclairpix // @MalalaFund student campaigners Zaynab Abdi and Muzoon Almellehan, refugees from Yemen and Syria respectively, are in #NYC this week campaigning for their rights to education and against the increased rates of early, child and forced marriage threatening their generation. “Refugees are the same as other people. We all share the same sun and the same sky,” said Zaynab who was during their panel at the #SocialGoodSummit2016. "It is not my fault to have lost my rights, my right to education,” added Muzoon. "We must help all children around the world.” Relocated to the US, Zaynab is now in school with a 4.0 grade point average and is captain of her soccer team. The girls are in town to share their stories during the United Nations General Assembly. #instacorps #humanrights #girls #photography #2030now @tooyoungtowed

A photo posted by National Geographic (@natgeo) on

Crowd-Solving: How Collaboration Inspired Innovation

Valen's Reef: Community-Led Conservation

Superbugs and the Threat to Antibiotics

The Future of Fuel: The Exploration to Change the World

The Role of LGBTQ in the Media: Shaping the Equality Narrative

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The Aurora Prize: Building a Better Future

"The truly poignant stories are where survivors become saviours", says the Co-Founder of the Aurora Humanitarian Initiative Noubar Afeyan at #SocialGoodSummit with #AuroraPrize Laureate Marguerite Barankitse #2030NOW #SDGs #GlobalGoals

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Address From David Nabarro, Special Adviser to the U.N. Secretary-General

American Leadership with U.S. Secretary of State John Kerry

Secretary John Kerry meets with journalist Katty Kay before their discussion yesterday on American Leadership at the 2016 Social Good Summit. Follow along today as Day 2 of the Social Good Summit kicks off by following the hashtag #instacorps with photographers @anastasiatl @stephsinclairpix @bendophoto @ronhaviv_vii @kerrypayne and @benfitch Photo by @benfitch #2030NOW #instacorps #globalgoals #socialgood @92ndstreety @undp @mashable

A photo posted by United Nations Foundation (@unfoundation) on

Digital in the Eye of the Campaign

Lauch of the Sustainable Development Goals App

"One for All": Turning Activism Into Action

Our President/CEO @jason_harris speaking about turning activism into action at the @mashable Social Good Summit. Proud as ever to work with the @unitednations on the #SDGs. #2030now

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Open Government: A Grassroots Effort

#BlackLivesMatter: Turning a Hashtag Into a Call-to-Action

A Conversation With Ambassador Samantha Power

I'm thrilled to have interviewed the incredible @ambassadorpower at the UN Social Good Summit this evening. This woman is a friend and an idol, working to make the world a better place every day. I hope that any of you who saw our first interview on Facebook Live, or our onstage panel afterward on the Mashable livestream, were as tremendously inspired by her as I am every time we speak. #SocialGood @usun #UnitedNations #2030Now #GlobalGoals

A photo posted by Sophia Bush (@sophiabush) on

+SocialGood Connectors

"Everyone can be a #GlobalGoals hero." +SocialGood Connectors and Advisors stood on stage and made a call to-action to the global audience. Learn how you can be part of the movement! Visit plussocialgood.org today. #2030Now

A photo posted by Plus_SocialGood (@plus_socialgood) on

World Cup: Global Goals Edition

The People's Report Card

Cody Simpson and His Fight for Ocean Preservation

Launch of U.N. Young Leaders for the Sustainable Development Goals

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Oceans Matter

Connecting the Dots: Indigenous Peoples, Forests and Climate Change

Rising Up

Rain in New York cannot dampen our spirits at the #socialgoodsummit2016 #UN #2030Now #Inspired #Girlpower #Genderequality Ting 😘

A photo posted by Preity Zinta (@realpz) on

Revolutionary Women

Vice President Joe Biden's Cancer Moonshot Address

"The #CancerMoonshot is all of us. It's about never giving up." —Vice President Biden with @DrBiden at the #SocialGood Summit on their hope that by 2030 we live in a world where cancer as we know it is ended #2030Now

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Memory Banda: Leading Like a Girl

Pandemic Preparedness

A Conversation With Apple's Lisa Jackson

For Kids, Play Is Serious

Media: What Sells, What Solves

Stigma: The Achilles Heel of the AIDS Epidemic

@mashable's @petecashmore and #ETAF chatting before our panel at #2030now. @unfoundation @undp @mashableevents

A photo posted by Elizabeth Taylor AIDS FDN (@elizabethtayloraidsfoundation) on

Creating Access Through Investment

Future and Hope

Creating a #LearningGeneration

Innovation: When Is It Effective, and Who Decides?

A Conversation With the World Food Programme's Ertharin Cousin

Cyber Civic Engagement

A Conversation With Demi Lovato

Thank you @unfoundation & @Mashable for having @themikebayer and I, and for helping continue the conversation around Mental Health at #SocialGoodSummit2016!

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To Be Heard

Yesterday I had the amazing honor to sit on a panel at the Social Good Summit called "To Be Heard" with Lonnie Ali and Nina Ansary, moderated by Chrysula Winegar. Beforehand and during the panel, I got to hear the thoughts and stories of these women, one of whom is the wife of Muhammad Ali, and the other, a writer of the Iranian woman's experience. The depth of knowledge and insight I was able to glean from them was boundless and made me feel so grateful to stand with them, exploring what it means to be heard, and the impact we can have in the world when we're brave enough to know ourselves and to take action. On #gratituesday I'd just like to take a moment to say being able to go from the Emmys on Sunday to the Social Good Summit on Monday is basically a dream for me. And all of you out there who aren't sure about this whole dream thing, or making your dreams real, I want to tell you it's possible. Know gratitude. Know yourself and then look beyond. And be heard. #socialgoodsummit2016

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Global Meetups

The 2016 Social Good Summit was presented by:

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Sponsored by:

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Topics Social Good United Nations Joe Biden