Could carbon-removal tech make travel more sustainable?

Iceland, hit by the oil crises of the 1970s, turned to geothermal energy - and they haven't turned back. The island is now powered by 100% renewable energy, and they are taking it one step more, looking to further cut emissions using a unique carbon capture system called CarbFix. It is being pioneered at the Hellsheidi geothermal power plant in western Iceland.

Running Tide Technologies, a shellfish hatchery in Maine, is betting on kelp forests as a way to store carbon deep in the ocean and sell that carbon to corporations looking to combat climate change and offset their own emissions. The startup is growing mini-farms of kelp on biodegradable floats and after a few months, they sink to the seafloor. More research is needed to see if it works, but they already have about 1,600 floats adrift in the ocean and the e-commerce company Shopify is the first to buy carbon offsets from them.

Prime Coalition is financing clean tech startups and climate-focused technologies that often don’t get a lot of funding. These technologies can be expensive to build and don’t generate profits immediately. So far, the public charity has secured $89 million that it has given into 18 energy ventures. “What’s important here is that the climate crisis is such a large-scale problem that we need lots of different types of solutions,” says Sarah Kearney, founder of Prime Coalition, “and so we need to match up right-fit capital to each kind of solution.”

Philanthropies are funding “tough tech” startups that are developing technologies to cut greenhouse gas emissions and mitigate the effects of climate change. Since 2014, the nonprofit Prime Coalition has channeled more than $24 million from wealthy donors and foundations to 10 ventures focused on that goal. Not all of their investments, though, have paid off. Yet, some of these initial investments could lead to widespread solutions to the world’s climate crisis.

Climeworks is focusing on pulling carbon dioxide directly out of the air to store or reuse in some capacity as a way to lower global greenhouse gas emissions. The Swiss company has 16 plants around Europe, with their biggest one in Switzerland that removes 900 tons of carbon dioxide a year that is then sold to Coca-Cola Co. to put in soft drinks or to local industrial greenhouses for plant growth. Scaling the operations to capture more carbon is costly, but the startup recently raised $76 million from investors.

To make their restaurant more energy efficient and to cut its carbon footprint, The Publyk House utilized the services of Efficiency Vermont, a publicly funded energy efficiency utility. As part of their Deep Energy Retrofit program, the utility helped install insulation, LED lighting, and high-efficiency appliances at the restaurant, allowing them to save 50 percent on energy in two years. Since the start of the program, 10 businesses have been able to cut their energy consumption in half.

An economic shift to renewable energy could take decades, but thanks to rapidly evolving disruptive technologies, dropping prices of solar and wind power sources, and increasing market demand for green business, the new age of renewable energy could encompass the world economy much more quickly.

As the global demand for energy continually increases, the strain on natural resources and the detrimental effects of fossil fuels become more problematic. But new developments in renewable energy technologies may provide new solutions. Minesto, a company based out of Northern Ireland, has a new device - structured something like an underwater kite - that allows for the constant harvesting of tidal power, regardless of current weather or wave conditions.

Less charcoal, faster cook times, energy efficient and healthier: these are all terms that have been associated with a new cooking stove produced by the small Ghana business Toyola Energy. This stove acts as a dual solution to both health risks and environmental concerns surrounding cooking with traditional methods, and is gaining tractions on a broader scale because of this.

Aptera Motors, a California-based startup, is poised to roll out the first mass-produced solar vehicle this year: for $25,900. The car is a three-wheel, aerodynamic electric vehicle covered in solar cells that can provide energy to drive about 40 miles. The model is not 100 percent efficient with some energy lost in its electrical current conversion and in its drive system, but the creators say it is four times more effect than an average electric vehicle. Still, when the company started taking preorders, they sold out of its first 330 vehicles in 24 hours.