Mark Zuckerberg took a break from his day job as CEO of Facebook on Thursday to talk about scientific research at the Chan Zuckerberg Initiative, the philanthropic organization he started with his wife, Priscilla Chan.

Even at CZI, Zuckerberg is very focused on technology. In a livestreamed discussion, Zuckerberg said that one of the challenges involved with cutting-edge research for labs and biotech start-ups is the high cost of computing services. While it's now cheaper than ever to sequence human DNA and generate data on our biological makeup, it's become extremely expensive to store and analyze all the information.

In particular, Zuckerberg called out Amazon Web Services, the leader in public cloud, and Amazon CEO Jeff Bezos for the high costs of using the company's infrastructure.

"One of the things we talk about is our cost of compute and our AWS bill," Zuckerberg said, in a chat with Dr. Joseph DeRisi and Dr. Stephen Quake, co-presidents of the Chan Zuckerberg Biohub, a collaboration with biomedical research institutions. "Let's call up Jeff and talk about this."

The CZ Biohub, a research center based in San Francisco, has a broad array of projects underway, ranging from cell biology to early-stage cancer research. Among its benefactors is LinkedIn co-founder Reid Hoffman

Zuckerberg is selling billions of dollars in Facebook stock to fund CZI, which he and Chan started in 2015.