The app, designed for ease of use, quickly asks a few questions to estimate your carbon footprint, based on factors such as the number of flights you take each year and your diet, and then lets you choose categories of well-vetted offsets to support through a monthly subscription, such as tree-planting projects in Madagascar and Panama, solar power projects, and “clean cookstove” projects that help families in developing countries use less fuel when cooking dinner over a fire. Like Wren, a similar subscription service for carbon offsets, the startup worked to identify offsets that could have the most benefit. … [Read more...] about This new app offsets your carbon footprint, then helps you shrink it
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Something tells me those people haven’t yet seen this new visualization, produced by The New York Times. It demonstrates what happens when you sneeze on the subway, with and without a mask. And, spoiler: Sneezing with a mask on is still not ideal, but sneezing without a mask on is an explosion of aerosol. It fills half the car with droplets, which churn through the air at face level, and coat surfaces so effectively that they trace the silhouettes of the seats. … [Read more...] about See how gross it is to sneeze on the subway without a mask
However, the state soon started seeing an increasing number of cases, when the inter-state traffic and repatriation flights started. There was a spike in the positive cases, mainly among those returning from outside, but this was not a big threat. The proportion of people contracting COVID-19 locally was low, when compared to those coming from outside the state. These numbers started increasing from the beginning of July, with community transmission setting in. … [Read more...] about COVID-19 and Kerala | How investment in social capital is paying off now
That means that gas stoves will need to be replaced by electric or induction stoves, gas water heaters will be replaced by electric water heaters, and furnaces that run on natural gas will likely be replaced by heat pumps, which make use of the constant heat underground to transfer heat inside when it’s cold (in the summer, the process can be reversed to create efficient air cooling). In Maine, the government is paying to help homeowners switch to heat pumps, with a goal of installing 100,000 by 2025. In New York, the state is spending billions on heat pumps as well. Some international governments already plan to go further. In the Netherlands, where natural gas is even more common than it is in the U.S., the country plans to be completely gas-free by 2050. … [Read more...] about What will it take for cities to get rid of natural gas?
Such technical glitches led the Bell System and Executone, a maker of business communications equipment, to build hardware specifically for school-to-home communications. This new gear gave students at home (or, sometimes, in a hospital) a gadget that resembled a tabletop radio, with a switch they could press when they were ready to speak. It connected by special phone line to another device in the classroom that picked up the voices of the teacher and students and broadcast that of the remote child. This in-school box was designed with portability in mind and was typically toted from room to room by volunteer students throughout the school day. … [Read more...] about How the telephone became the first great remote-learning technology