Business

Google-linked firm wins US approval for drone deliveries

Wing Aviation, a firm owned by Google parent Alphabet, on Tuesday became the first drone operator to be certified as an airline by US authorities, allowing it to begin commercial deliveries in the country.

Software

Opera for Android ushers in new night mode

With version 55 of its Android browser, Oslo, Norway-based Opera has a redesigned night mode that "reduces the light pollution caused by your phone to the bare minimum."

Electronics & Semiconductors

Radiative cooler that cools down even under sunlight

Now that autumn is upon us, there is a large temperature gap between day and night. This is due to the temperature inversion caused by radiative cooling on the Earth's surface. Heat from the sun during the day causes its ...

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Pollution

Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms . Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they exceed natural levels. Pollution is often classed as point source or nonpoint source pollution. The Blacksmith Institute issues annually a list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.

This text uses material from Wikipedia, licensed under CC BY-SA