articles

La fabricación de cemento es uno de los procesos industriales más intensos en cuanto a huella de carbono, pero un equipo internacional de investigadores ha encontrado que con el tiempo, el material de construcción ampliamente utilizado reabsorbe gran parte del CO2 emitido cuando se fabricó.

En muchas partes de Europa y América del Norte, la disminución de las emisiones industriales en los últimos 20 años ha reducido la contaminación de la atmósfera ya su vez de los suelos y el agua en muchas áreas naturales. 

With rapid industrialization and urbanization over the past decades, China has experienced widespread air pollution induced by fine particulate matter with a diameter of 2.5 µm or less (PM2.5). To protect human health and meet the newly implemented annual PM2.5 target (less than 35 µg m-3), great efforts are needed to reduce emissions effectively. It is, therefore, essential to understand how future PM2.5 concentrations are affected by changes in anthropogenic emissions. 

Cement manufacturing is among the most carbon-intensive industrial processes, but an international team of researchers has found that over time, the widely used building material reabsorbs much of the CO2 emitted when it was made.

The environmental impact of your Thanksgiving dinner depends on where the meal is prepared.

Carnegie Mellon University researchers calculated the carbon footprint of a typical Thanksgiving feast – roasted turkey stuffed with sausage and apples, green bean casserole and pumpkin pie – for each state. The team based their calculations on the way the meal is cooked (gas versus electric range), the specific state’s predominant power source and how the food is produced in each area.

They found that dinners cooked in Maine and Vermont, states that rely mostly on renewable energy, emit the lowest amounts of carbon dioxide, a greenhouse gas that is tied to climate change. States that use coal power, such as Wyoming, West Virginia and Kentucky, have the highest carbon dioxide emissions.