Talmon Marco admits he is not the expected climate technologist.

In 2010, he co-founded mobile messaging company Viber, which was acquired in 2014 by Japanese Internet company Rakuten for $900 million. In 2015, Marco co-founded ride-hailing company Juno, which was acquired in 2017 by the Israeli transportation company Gett for $200 million.

In the years after Juno was acquired, Marco changed his focus to making the world better. “There are obviously a lot of problems in the world, but the one that we felt was closest to our heart is the climate crisis.”

Marco began looking for technologies that could be used to combat climate change and in his research, he became connected with faculty members at Technion, the Israel Institute of Technology, who were working on a technology that produces hydrogen in a nonconventional way.

That science became the framework for Marco’s next company, H2Pro, which is one of a crop of start-ups trying to speed the clean energy revolution by focusing on new ways to make hydrogen.