Researchers discover a new way to control infrared light

In the 1950s, the field of electronics began to change when the transistor replaced vacuum tubes in computers. The change, which entailed replacing large and slow components with small and fast ones, was a catalyst for the ...

Air pollution shuts schools in Iran's capital

Schools in Tehran were ordered to be closed on Wednesday after the Iranian capital was cloaked in dangerously high levels of air pollution, authorities said.

India's capital restricts cars as people choke in dirty air

Authorities restricted many private vehicles from taking to the roads of India's capital on Monday amid a public health crisis that has left New Delhi residents gasping and their eyes burning from toxic air pollution.

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