If Amazon doesn’t know how to eliminate carbon emissions, then who does?

Amazon’s chief sustainability officer said Tuesday the company doesn’t know how it will achieve its goal of net-zero carbon emissions by 2040.

“We are still striving towards that target,” Kara Hurst said at an Axios event, adding later that she is “not going to sit here and say, ‘We know all the ways that we’re going to do this.’”