Indian capital opens first 'smog tower'

India's capital New Delhi opened its first "smog tower" on Monday aimed at reducing the air pollution blamed for thousands of premature deaths every year, but experts were sceptical.

James Webb Space Telescope testing progress continues

Engineers have made considerable progress in checking off NASA's James Webb Space Telescope's final series of tests. Three big milestones have recently been completed, bringing the world's most complex and powerful space ...

Upward lightning takes its cue from nearby lightning events

In the chaos of a thunderstorm, upward moving lightning occasionally springs from the tops of tall structures. Scientists don't fully understand how upward lightning is triggered; it is likely a combination of multiple environmental ...

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