COMPANIES TOUT ENVIRONMENTAL TECH INNOVATIONS

The mottled bright green leaves of a pothos plant stood out against the flashy expanse of electric vehicles and smart products at the CES tech show in Las Vegas this year.

This particular version of the familiar houseplant was bioengineered to remove 30 times the amount of indoor air pollutants of a typical house plant, according to Neoplants, the Paris-based company that created it.

Customers are already joining a waitlist for seedlings still in the nursery.

Neoplants founder and CEO Lionel Mora is a passionate former Google employee who sings a bit of a different tune than other founders at the electronics convention, with its technology-can-solve-anything vibe. He says before people turn solutions, they need to address to engineering consumption. But, "when it comes to innovation, we believe that biology is the way to go because it's sustainable by design," he said.

As countries grapple with how to limit global warming and protect natural resources and biodiversity, more companies are growing their own commitments to building sustainable supply chains and slowing emissions. For others, like Neoplants, addressing environmental issues is their whole reason for being.

Companies and start-ups at CES touched on a broad range of those efforts. Austin-based Pivet showcased biodegradable phone cases. Electric watercraft company Candela unveiled a 28-foot electric speedboat. Ukrainian start-up Melt Water Club presented its water purification method that uses freezing.

The Department of Energy even had a booth a first, said Energy Secretary Jennifer Granholm.

Granholm said she is excited about a range of technologies at CES and beyond, from John Deere's newest electronic farm equipment, to battery storage using alternative materials such as sodium salt, both of which she said the Department of Energy has helped fund.

Granholm also spoke about expanding the use of clean energy, including some forms of hydrogen, fusion and geothermal energy, highlighting the latter as an opportunity for the oil and gas industry.