Considering the number of annual deaths caused by pollution, it not only makes sense to cut emissions but to also improve air quality. All over the world, groups are working to make the atmosphere as breathable as possible. Bogota is erecting vertical gardens while China is manufacturing air-purifying bicycles. Not to be outdone, Iceland has set up the world’s first negative emissions power plant.
Climate startup Climeworks refitted a geothermal plant in Iceland to remove carbon dioxide from the air while also generating power for thousands of homes. This carbon dioxide is safely embedded in rock, where it will remain for millions of years.
The storage process, called carbon capture and storage, is keeping temperatures from rising to extreme levels. The facility is projected to remove 50 tons of carbon dioxide from the atmosphere annually. It isn’t much — but it’s something! The procedure is also fairly straightforward.
Climeworks uses… [the] plant’s waste heat to run their own carbon capture tech, pulling carbon dioxide directly out of the air and feeding it into the existing Carbfix infrastructure, which deposits it in underground basalt. There, the carbon dioxide forms crystals within two years, and remains stable underground for millennia.
Limited to information from my high school physics class, I hardly knew trapping CO2 was possible. Either way, we should be over the moon to have chemical engineers.
Due to shortages of natural resources like oils and fossil fuels, researchers are creating energy with alternative sources. From what it seems, our bodies may be more useful than we give them credit for. As a matter of fact, our sweat can power various electronics, including radios. In this case, so can our tears, as they have been found to contain a protein called lysozyme.
Lysozyme has an innate antibacterial property, as its main role is to protect against infection by breaking down bacterial cells. While many other known piezoelectric materials contain toxic elements like lead, Stapleton says lysozyme’s nontoxic, organic quality could make it useful to biomedical technology.
Big words aside, applying pressure to the protein creates a small electrical charge. That electrical charge can power medical devices such as pacemakers, and can eventually be used to replace old batteries. Head of study Aimee Stapleton explained that lysozymes crystallize, which make them hassle-free and thus make their usage relatively easy to develop.
“I was interested in lysozyme because it can be crystallized really easily, which makes it easier to study,” she says, “because crystallized structures tend to show piezoelectricity.”
The protein is apparently more conductive than other materials, which makes them a good alternative to replace old batteries with, but don’t worry — scientists aren’t going to start making people cry. Lysozymes are apparently also present in egg whites. Maybe chicken farmers are the ones who should be stoked.