Objects in the distant sky have fascinated humans for long, drawing feverish speculation about their nature and origins. But not all UFOs refer to the existence of life beyond Earth.

First discovered in 1802, tantalum is a rare metal named after a Greek mythological figure. Here is everything you need to know about it.

Emissions are rising, there's not enough money to deal with a worsening climate, and its harmful effects become more apparent every day. What's the way ahead?

In recent years India has steadily increased its coal production. However, it stands in stark contrast to the country’s ambitious plans of achieving net-zero. What's behind the contradiction?

The Madras Observatory was merged with the KoSO following the reorganisation of all Indian observatories on April 1, 1899. The hilltop observatory helped in making some key scientific discoveries over the years.