Modern agriculture and produce farming is not sustainable — whether you're using the environmental impact definition of that word or in terms of a lasting economy.

This concept has been made abundantly clear to Zain Shauk, co-founder and CEO of Houston-based Dream Harvest Farming Co., a vertical indoor farming company producing leafy greens and herbs and delivering them locally to grocery stores in Texas and nearby states.

"The inspiration for Dream Harvest is really the problem with our food system and agriculture today," Shauk says on this week's episode of the Houston Innovators Podcast. "Thirty-five percent of the produce grown is thrown away before you even have a chance to eat it. Almost more astounding than that is that 80 percent of our water use as a nation is agricultural."

Shauk brings up California as an example because the state's constant water shortage is hindering outdoor farming. The country relies on California for leafy greens, and both due to the lack of water and the fact that it takes produce seven to 10 days to travel from the West Coast to Texas grocery aisles, it's not an ideal process in any way. Dream Harvest can change that.

"The climate is changing now. We talk about Earth Day and the importance of realizing our impact on the planet, but we are already there," Shauk says on the show. "The climate has already changed."

The future of produce depends on making more environmentally friendly changes to the supply chain, and new technologies are enabling vertical indoor farming to effect these changes in some part. Dream Harvest recently received a $50 million investment from Orion Energy Partners to open a 100,000-square-foot indoor farming facility in Houston to scale production. Shauk says he's also using the funding to support research and development to expand into other types of produce, but he has a lot to consider — affordability of the produce, maintaining sustainability, and more.

"It's going to take a lot of work and a lot of research. What I do know is we've come a long way with leafy greens," Shauk says. "When we started, we weren't growing in a way that makes financial sense with the amount of money we have to spend growing the product — and now we do."

Some of the reasons for advances in vertical farming is new technology — which is coming out of a slightly different green industry.

"Cannabis has really driven a lot of the innovation — there's been so much money poured into the marijuana industry to grow it for commercial sale, and that's evolved a rapid development in technology for indoor growing," Shauk says, adding that one example of this is indoor lighting. "There's so much interest in making money on marijuana, that we're benefiting off that from produce."

Shauk shares more about the future of Dream Harvest and vertical farming, as well as what Houstonians can do to shrink their carbon footprint, on the podcast episode. Listen to the full interview below — or wherever you stream your podcasts — and subscribe for weekly episodes.