Onchocerciasis, commonly known as ‘river blindness,’ is caused by the parasitic worm Onchocerca volvulus. The worm is carried by black flies.

A commentator yells excitedly as hundreds of spectators stand glued to a video of a racecourse — but the athletes they are rooting for are actually tiny sperm cells.

The Delhi Police has arrested a 21-year-old engineering student with alleged mental health issues for sending threat mails to the head coach of men’s cricket team and former BJP MP Gautam Gambhir, an official said on Saturday.