Simple UV-LED lights could be used to kill coronavirus and HIV
The Optimist Daily has reported on a number of inventions that use ultraviolet (UV) microorganisms' radiation as a sanitation tool, like this door handle or this mask decontamination machine. It seems lighting may be the future solution to quickly and safely zap away harmful microorganisms. A Read More...
How much energy? Your home energy questions answered
Every day we have a choice in which appliance to use. The kettle or the stove? A bath or a shower? Most of the time it's convenience and habit that automatically choose between our options. However, it may be useful to pause for a second and consider which is more efficient in terms of costs and Read More...
Pittsburgh will become a dark sky city in 2022
Anyone who lives in a big city knows that stars are a rare sight due to light pollution, but that may soon change in one American metropolis. Pittsburgh, Pennsylvania has announced that it will become a dark sky city in 2022, joining others like Tucson and Sedona in Arizona, and Fulda in Germany in Read More...
Solar Sister empowers women in Africa to sell clean, solar technologies
Distributing solar-powered lights and phone chargers where they are needed the most, while giving low-income women the opportunity to earn supplementary income—such is the vision behind Solar Sister, a social enterprise with a presence in Tanzania, Uganda and Nigeria. With 1,500 women involved in Read More...