BARCELONA — Mark Zuckerberg told a packed house on Monday at Mobile World Congress that Facebook is still building drones, lasers and satellites as a part of an initiative to get more of the world's population online.

Last year, the Facebook CEO announced that Facebook's Connectivity Lab was planning to "build drones, satellites and lasers to deliver the internet to everyone."

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Zuckerberg spent a substantial amount of time during his presentation discussing the Facebook-led initiative Internet.org, which aims to bring free Internet data to four African countries, Colombia and India. While we haven't heard too much about how drones and other tools would be incorporated in the future, Zuckerberg said building these resources is still on the company's radar.

"We're working on it," Zuckerberg said. "When we have that stuff, the goal is to form the same type of partnerships we have today with our partners to give people more tools to connect. Some of the technology we have today isn't cost effective... just because we're working on plans and satellites doesn't mean that that is the type of stuff that will do it. Over the next five to 10 years, there will be a lot of innovation. People like talking about that kind of stuff because it's sexy, but it's not the big bit."

Zuckerberg's passion for bringing the web to more people was reminiscent of the updates shared earlier in the day by Google Senior VP Sundar Pichai. Google is gearing up to launch solar-powered drones in certain regions this year to get those areas online.

In fact, Zuckerberg even said he would work with rival Google to help achieve that mission of getting the world's population online. "Sure. I'd love to do more with them," he said when someone asked if the two companies would consider working together in the future.

When Internet.org first launched in Zambia, it teamed up with an operating partner in the region and incorporated Google search. He called it an "important tool."

The Facebook CEO, who says he traditionally doesn't travel very much, spent the last year visiting various countries to learn more about expansion. He recalled spending time in cyber villages in Jakarta, Indonesia, where people choose to live so they can be connected to the Internet. "This is especially happening in developing countries," he said.

He likened one of the biggest challenges to the early days of the Internet when you had to convince people there was a reason to get online.

Another challenge is cost. "To grow the Internet is expensive... we want to make progress."