pollutant

A team of European and Israeli engineers have developed a graphene-titanium dioxide mixture that covers the surface of buildings or streets that can absorb pollutants to improve

The photo of the purple sunset in the fuzzy smoke in the ancient capital of Nanjing is causing a fever on China's social network.

The strange rain appeared in Kannur, Kerala state, India at about 6:50 am on July 5, local time and lasted for 15 minutes, the Times of India reported. Many people panicked when